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The structural, optical, electrical and radiation shielding properties of Co-doped ZnO thin films Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-11 Elif Bayat Buzok, Serife Yalcin, Gokhan Demircan, Demet Yılmaz, Bulent Aktas, Emine Aytar
Co:ZnO thin films are promising due to the similar ionic radii of cobalt and ZnO, and their potential for carrier spin injection, transfer, and detection. This study aims to investigate the structural, optical, electrical, and radiation shielding properties of Co-doped zinc oxide (Co:ZnO) thin films for potential applications in various fields such as semiconductors, solar cells, spintronics, and radiation
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PET image reconstruction and dosimetry from voxelized phantoms with GATE Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-10 María Lorduy-Alós, Pedro H. Avelino de Andrade, Miriam Magela Peña-Acosta, Sergio Gallardo, Gumersindo Verdú
Accurate patient-specific internal dosimetry is a critical concern in the field of nuclear medicine. GATE is a robust Monte Carlo toolkit renowned for its integration of Geant4 algorithms, PET specialized tools and patient-specific dosimetry estimation. In this work, a GATE model is developed to simulate the PET scanner Biograph Vision and a voxelized phantom from Computed Tomography (CT) images. The
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The response of radiation detectors in modulated fields for small targets Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-10 José M. Lárraga-Gutiérrez, Olivia A. García-Garduño, José A. Herrera-González
Intensity-modulated delivery techniques in radiotherapy are advanced methods that use the superposition of small fields to create complex dose distributions. These techniques result in intense gradients and inhomogeneous dose regions, making the dosimetry of composite fields challenging, especially when the sub-fields superposition does not restore charged particle equilibrium. This work aims to address
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Radiation-induced grafting of polyethyleneimine onto cellulose triacetate membrane for separation of cesium ions from aqueous solution Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-10 Jinling Wu, Jianlong Wang
Radiation grafting of polyethyleneimine (PEI) onto the surface of cellulose triacetate (CTA) membrane was successfully performed. Pre-radiation and co-radiation were applied by gamma rays at the dose of 12 kGy. FT-IR, SEM, XPS, contact angle, zeta-potential, grafting ratio, etc. Were used to characterize the PEI-CTA membranes before and after grafting. The FT-IR spectrum showed that a notable discernible
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Evaluation of gamma dose rate for the ionization chamber tube in a reactor using the Monte Carlo method Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-10 Qing-Yu Meng, Run-Song Feng
A former plutonium production reactor code-named 821 which is natural uranium fuelled, graphite-moderated and water-cooled is currently in the second stage of decommissioning (partial dismantling and core burial). Ionization chamber tubes made of stainless steel, which are part of the neutron flux detection device, are activated by neutrons leaking from the core during the reactor operation. Since
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Sustainable and fast synthesis of zinc-phthalocyanine for gamma radiation dosimeter application Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-08 Bojana R. Vasiljević, Daliborka Odobaša, Ivica Vujičić, Milica Budimir Filimonović, Krisjanis Smits, Dušan Mijin, Dragana Marinković
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The performance promotion of polyphenylene sulfide fibers based on the electron beam irradiation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-08 Guangfei Wei, Yinglong Wang, Lijun Qu, Mingwei Tian, Shifeng Zhu
To give full play to the good performance of polyphenylene sulfide (PPS) fiber, electron beam irradiation was used to promote the property of the PPS fiber. The fibers were irradiated at different doses, and changes in structure and property of PPS fibers were analyzed by X-ray diffraction, moisture regain, heat resistance and thermo-gravimetric analysis. The strength of the specimen increased from
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Phenomena observed in electron EBRT using a pulse-by-pulse radioluminescence dosimetry system with cloud-based analytics Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-07 Azmi.A. Basaif, Adebiyi Oresegun, Zubair H.T., Hafiz Zin, K.Y. Choo, Sian Lun Lau, Yuen-Yi Wong, Elfed Lewis, H.A. Abdul-Rashid, D.A. Bradley
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An enormous increase in atmospheric positron flux during a summer thunderstorm on Mount Aragats Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-07 A. Chilingarian, B. Sargsyan, M. Zazyan
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Determination of moisture content in coal using pulsed fast thermal neutron activation technique Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-07 Tushar Roy, Shefali Shukla, Yogesh Kashyap, M.R. More, Mayank Shukla, Prashant Singh
The quality of coal is greatly influenced by the residual moisture content, which in turn affects the Gross Calorific Value (GCV) by limiting the maximum energy that can be extracted from a given mass of coal. Various methods have been developed to measure this residual moisture, including gravimetric techniques, near-infrared spectroscopy, microwave, and infrared moisture meters. Amongst these, neutron-based
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Ionization of sulfur clusters, S[formula omitted] (n = 2−8) by electron collisions Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-06 Himani Tomer, Nafees Uddin, Bobby Antony
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The electron irradiation effect on reduced graphene oxide paper Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-06 Xiaojuan Zhen, Yifan Huang, Guangyi Wang, Zhanzu Feng, Shengsheng Yang, Kai Jiang, Lei Zhao
The reduced graphene oxide paper (rGOP) has been irradiated with different energy and dose, namely 200 keV and 1000 keV electron with dose ranging from 2 × 10 e/cm × 10 e/cm, using a ground-based irradiation simulator. The electrical properties, surface morphology, structural defects, interlayer spacing, thermal stability of rGOP before and after irradiation were systematically investigated. Results
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Calibration of buried NaI(Tl) scintillator detectors for natural radionuclide measurement based on Monte Carlo modelling Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-06 A. Chambon, E.B. Klinkby, M. Bu, A.S. Murray, M. Kook, H. Olesen, K.B. Nielsen, B. Lauritzen
Measurements of naturally occurring concentrations of K, and of the decay series of U and Th, are of interest in the earth sciences in general, and in particular, scintillator-based gamma spectrometers can be used for the low cost determination of burial dose rates in natural geological samples. We are currently developing a robust, portable, wireless detector specifically intended for field measurement
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An experimental and theoretical study to evaluate Al2O3–PbO–B2O3–SiO2–BaO radiation shielding properties Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-05 Aljawhara H. Almuqrin, M. Rashad, Chaitali V. More, M.I. Sayyed, Mohamed Elsafi
This study's objective is to evaluate an AlO–PbO–BO–SiO–BaO glass system's radiation shielding characteristics. The composition of the glasses is 15AlO–25PbO–(60-x)BO–10SiO–xBaO, with x in the 5–20 mol% range. Experimental results were used to determine the samples' linear attenuation coefficients (LAC), which were then confirmed by Phy-X program. Utilizing narrow beam transmission geometry, the experimental
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Dose delivery error from respiratory motion in free breathing left breast irradiation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-04 Wassim Jalbout, Dima Mahmoud, Ali Elzein, Sarah Abou Naaj, Paul Ramia, Zeina Azzam
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Capture enhanced neutron irradiation for the treatment of the Alzheimer Disease: Micro-nanodosimetric characterization of beta amyloid peptide samples Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-04 D. Mazzucconi, D. Bortot, S. Agosteo, A. Pola, D. Rastelli, S. Pasquato, C. Caprioli, S. Micocci, S. Parisotto, A. Deagostino, S. Geninatti Crich, S. Altieri, N. Protti
Alzheimer Disease (AD) is the most common cause of dementia. 46.8 million people live with AD worldwide, with numbers projected to almost double every 20 years. The etiological mechanisms underlying the neuropathological changes in AD remain unclear. The beta amyloid peptide Aβ is considered to be the main culprit of the pathological processes. NECTAR (NEutron Capture-enhanced Treatment of neurotoxic
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VoxIsle: A new method in InterDosi code for improving internal dosimetry simulation performances in voxelized phantom Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-04 Jaafar EL Bakkali, Abderrahim Doudouh
In order to assess the internal dose due to exposure to radiation, the ICRP recommends the use of a reference voxelized phantom. Although voxelized geometry is a very promising geometric representation of a complex body, it showed a limitation in dose calculation for large-voxel array phantoms that requires more memory and CPU time. We have developed a new voxel compression method called VoxIsle that
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Ab-initio calculations of cubic and tetragonal ZrO2 doped with Cd, Y, Y+Nb, Y+Ta- charge-compensating dopants: Structural and electrostatic calculations Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 I. Najdhefer, A. Kapidžić
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Temperature-dependent synchrotron XRD study and electrical properties of the (1-x)BZT-(x)BCT lead-free piezoceramics Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 Jirapa Tangsritrakul, Chumpon Wichittanakom, Chatree Saiyasombat
In recent years, researchers have shown the feasibility of the BZT-xBCT lead-free piezoelectric ceramics for using in various applications such as actuator, energy harvester, high-frequency ultrasonic transducer, etc. However, little evidence of temperature-dependent electrical properties of the BZT-xBCT ceramic was found. Moreover, some researchers have utilized Raman spectroscopy to observe the phase
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A novel aloe vera mediated Bismuth–Magnesium–Copper nanocomposite for radiation shielding applications Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 B.M. Chandrika, L. Seenappa, Holaly Chandrashekarashastry Manjunatha, R. Munirathnam, K.N. Sridhar, S. Manjunatha, A.J. Clement Lourduraj
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Research progress of electron beam radiation grafting modification of textiles Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 Xiaofei An, Yang Shao, Lingling Ma, Hongyong Wang, Gang Xu, Min Luo
Radiation grafting modification represents an eco-friendly approach to material alteration. In recent years, the application of electron beam radiation has seen substantial advancements due to its superior safety, controllability, and efficiency. Textiles, as vital human materials, are extensively employed in diverse sectors such as daily life, industrial production, medicine, and environmental protection
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Unusual enhancement of the radical production in the X-ray irradiated aqueous-organic systems containing W(VI) in homogeneous and nanoparticle forms Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 Ekaterina S. Shiryaeva, Anzhelika I. Vanina, Irina A. Baranova, Elizaveta V. Sanochkina, Svetlana V. Kameneva, Glafira S. Taran, Alexandr V. Belousov, Vera V. Klechkovskaya, Vladimir I. Feldman
The metal and oxide nanoparticles (NPs) containing various elements with high atomic number () are considered as prospective sensitizers for the production of radicals upon X-ray irradiation of aqueous solutions, which can be used for different applications in medical treatment and material modification. The common basis for the sensitizing effect in oxygen-free systems is concerned with increase of
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Experimental and numerical assessment on Pb-free alkaline mixed borate glasses for radiation resisting applications Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 K.A. Naseer, M.K. Komal Poojha, K. Marimuthu, M.I. Sayyed, Mohammed S. Alqahtani
Melt quenching technique has been used to fabricate calcium boro-phosphate glasses doped with praseodymium oxide ions. With increased PO content, structural parameters like oxygen molar volume (Vo) and oxygen packing density (OPD) indicate an opposing trend. In addition to optical factors like optical electronegativity, absorption edge, and direct and indirect bandgap values being estimated and discussed
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Mapping absorbed dose distribution in containers of blood and blood components using radiochromic dosimeters irradiated in an industrial irradiator Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 D.S. Calheiro, L.C. Meira-Belo, T.C. Alonso
Investigating the irradiation of blood and blood components is pivotal for guaranteeing the safety and efficacy of blood products employed in medical interventions, such as blood transfusions and hematopoietic cell transplants. Irradiation is commonly used to mitigate the risk of graft-versus-host reactions and eradicate pathogens present in blood components, thereby shielding recipients from blood-borne
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Characterization and radiation shielding efficiency of MWCNT/shape memory ternary blend composite films Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-03 Sibel Selçuk Pekdemir, Demet Yilmaz, Serpil Yalcin Kuzu, Mustafa Ersin Pekdemir
In this study, the structural, X-ray and gamma-ray, and neutron shielding properties of shape memory ternary blend/multi-walled carbon nanotube (MWCNT) composite films were investigated. The composition of the composite films was defined as (100-x) poly (ε-caprolactone) (PCL):polyethylene glycol (PEG):polyvinyl chloride (PVC) + xMWCNT, where x = 0, 1, 3, 5% (mole percentage). The ternary blend/MWCNT
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Evaluation of incorporation of granite waste and SnO2-NPs into coating mortar for gamma-ray shielding Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-01 M.I. Sayyed, Aljawhara H. Almuqrin, Mohamed Elsafi, U. Rilwan
This study explores the use of waste granite and tin oxide nanoparticles (SnO NPs) as replacements for sand in mortar composites containing Ordinary Portland Cement (OPC), Hydrated Lime (HL), and Quarry Sand (QS). Scanning electron microscopy (SEM) imaging revealed an increase in particle distribution between voids in the control mortar, enhancing photon absorption. The density of the prepared mortar
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Energy and Z dependence of low velocity Nq+ ion induced M X-ray relative intensities for some heavy elements Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-01 Balwinder Singh, Shehla, Anil Kumar, Deepak Swami, Ajay Kumar, Sanjiv Puri
The intensity ratios, ()(k = ξ, γ, m1; n = total, αβ), for some heavy elements, Yb, Au, Tl, Pb and Bi induced by 1000 keV−1750 keV N (q = 4, 5) ions have been measured in order to investigate their dependence on the projectile energy and atomic number of the respective target elements. The measured intensity ratios have been compared with two sets of values calculated using the M (j = 1–5) sub-shell
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Electron beam-assisted exfoliation of boron nitride and covalent functionalization Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-01 S. Selambakkannu, N.A.F. Othman, N.L. Ishak, T.M. Ting, Z.A. Karim
A facile, scalable exfoliation technique is still required for further modification to cater to any potential application for two-dimensional boron nitride. This paper discusses the radiation-assisted exfoliation of hexagonal boron nitride (h-BN) using electron beam irradiation and followed by functionalization with phosphoric acid 2-hydroxyethyl methacrylate ester (PA) to facilitate targeted applications
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Degradation and mineralization of 2-chlorobiphenyl by gamma radiation-activated persulfate system Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-05-01 Qin Wen, Shizong Wang, Jianlong Wang, Hai Chen, Yuedong Zhou
In this study, the degradation and mineralization of 2-chlorobiphenyl (2-PCB) by gamma irradiation were investigated in the presence of persulfate (PS), to examine the synergistic effect of radiation and persulfate oxidation. The results showed that the absorbed dose required for complete removal of 2-PCB decreased in the presence of PS. In addition, compared to a single irradiation system, the removal
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Computed tomography system performance for different iterative reconstruction algorithms Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-29 I. Findikli, A. Yalcin, O. Kasapgil, B. Yildirim, S. Fitoz, M.R. Onur, O.L. Boyunaga, G.K. Atac, T. Sancak, T. Olgar
The number of the Computed Tomography (CT) examinations has increased greatly over the past decade; This has made CT doses the largest source of the individual effective dose from medical exposures worldwide. Evaluation of image quality in CT is an important issue to ensure diagnostic accuracy, while keeping the radiation dose especially to the pediatric patient as low as reasonably possible. The purpose
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Investigation on thermoelectric properties of SnSe thin films as prepared by RF magnetron sputtering Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-28 Mekhala Insawang, Surasak Ruamruk, Athorn Vora-ud, Kunchit Singsoog, Sakorn Inthachai, Kongphope Chaarmart, Sarawoot Boonkirdram, Mati Horprathum, Melania Suweni Muntini, Sungkyun Park, Thang Bach Phan, Tosawat Seetawan
In this work, we investigated the thermoelectric properties of SnSe (Tin Selenide) thin films onto SiO/Si-wafer substrates as prepared by RF (radio frequency) magnetron sputtering technique. The sputtering conditions used base pressure below 5.5 10 Pa and working pressure at 0.93 Pa within the Ar atmosphere as a flow rate fixed 40 sccm. The RF sputtering power was applied at 80 W and sputtering time
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Assessing the radiation stability of key ligands in nuclear waste separation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-27 Ilya S. Sosulin, Aliaksandra Lisouskaya
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Mechanistic study of the acidic aqueous solution of chrome alum chemical dosimeter: Steady state, pulse radiolysis and conductivity studies Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-27 Essam Banoqitah, Fathi Djouider, Abdulsalam Alhawsawi
It is crucial to have an efficient and reliable approach to ensure an optimum traceability in high dose range and high dose rate dosimetry for radiation processing (food irradiation, surgery devices sterilization …). Chemical solution dosimeters are well suited for this purpose. By using γ-irradiation and pulse radiolysis, we evaluated the performances of the chrome alum KCr(SO)·12HO based on the radiation
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Organic-inorganic hybrids of BiI3-polymers with embedded conductive carbon fillers displaying high SNR for direct X-ray imaging detectors Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-26 Ritu Chaudhari, Chhaya Ravikant, Sonu chillar
Organic polymers are light weight, low toxic and environmentally stable candidates of interest in X-ray detection application. But low attenuation and high recombination rate of charge carriers cause low sensitivity is major limitation of these detectors. In this work, organic polymers (PS/PMMA) composites were prepared with high-Z inorganic BiI by simple dry mixing technique. The organic-inorganic
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Melt-quenched zinc sodium borate glasses: Understanding the role of ZnO/Na2O ratio in density, band gap, and radiation attenuation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-26 Taha Abdel Mohaymen Taha, Mohammad H. Alhakami, Numa A. Althubiti, K.M.A. Saron, Mengge Dong, M. Ibrahim, S.A. Saad
In this work, we successfully prepared glasses with the composition 55 BO – (45-x) ZnO – x NaO (x = 0, 5, 10, 15) using the traditional melt quenching procedure. We analyzed the influence of substituting ZnO with NaO at different concentrations on the attenuation of ionizing radiation and the glass density. Different analytical tools, such as XRD, FTIR, and UV-VIS spectroscopy, were used to investigate
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Modelization of extended axial field-of-view PET scanners to analyze the performance improvement Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 Miriam Magela Peña-Acosta, Sergio Gallardo, María Lorduy-Alós, Gumersindo Verdú
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Computational evaluation of the bucky components influence on the estimation of normalized glandular dose in digital mammography Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 J. Godeli, D.M. Cunha, M.P.A. Potiens, M.E. Poletti
The mean glandular dose (MGD) is the most suitable dosimetric quantity used in mammography to describe the absorbed dose by the breast, although it cannot be directly acquired. Studies have provided conversion factors widely implemented in international dosimetry protocols to estimate MGD, such as normalized glandular dose (DgN). Over time, the DgN estimation was refined by considering geometric models
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Corrigendum to “Preliminary results of a single photon emission computed tomography (SPECT) detector for inspection of spent fuel assembly” [Radiat. Phys. Chem. 197, 110162] Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 Min Kyu Baek, Hyun Joon Choi, Kyu Bom Kim, Jae Joon Ahn, Chul Hee Min, Yong Hyun Chung
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Thermoluminescence dosimetry and microstructural characteristics of gamma-irradiated natural flake graphite Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 Mayeen Uddin Khandaker, Siok Ee Lam, Amirul Najman Ariff Bin Md Daud, Siti Fairus Abdul Sani, David Andrew Bradley, Khalid S. Alzimami, Huda I. Almohammed, Zuhal Y. Hamd, Hamid Osman
Thermoluminescence (TL) and microstructural analysis were conducted on natural flake graphite (NFG) to assess its suitability for radiotherapeutic x-ray dose measurements. The investigations encompassed the examination of TL glow curves, linearity, sensitivity, signal decay, and repeatability. NFG samples were exposed to Co gamma radiation doses ranging from 2 Gy to 20 Gy. The microstructure of the
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Determination of Radium concentration and Radon Exhalation Rates Using CR-39 Detector for Different Geopolymer Cement Samples Containing Industrial Wastes Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 M.Y. Shoeib, Morsy A. El-Apasery, Doaa A. Ahmed, A.F. Abd-Elraheem
Natural material like metakaolin, along with industrial wastes such as fly ash (FA), cement kiln dust (CKD), and ground granulated blast furnace slag (GGBFS), are being used to develop new affordable and environmentally friendly construction materials (Geopolymers) that result in reduced carbon dioxide emissions. Geopolymers are gaining attention for their ability to effectively remove organic and
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Developing and using international standards for neutron ambient dose equivalent rate meters Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 M. Voytchev, R. Radev
Measurements of neutron ambient dose equivalent rates are challenging because there are no perfect instruments that cover the entire 9 orders of magnitude neutron energy range (thermal to 20 MeV). Hence quantifying performance requirements with the international standard IEC 61005 for neutron ambient dose equivalent rate meters presents unique challenges. This paper discusses the requirements of this
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Monte Carlo analysis of dosimetric issues in space exploration Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 Lorenzo Isolan, Valentina Sumini, Marco Sumini
The Radiation protection is of paramount importance in the planning of human exploration activities in space. The related risks must be considered with respect to two aspects: devising a proper shielding and providing answers to the requirement of an effective dosimetry evaluation in astronaut's activities. Both aspects have been considered using the Monte Carlo (MC) code MCNP 6.2 as the reference
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Shielding properties of Li2B4O7:Dy3+,Yb3+ glass containing copper nanoparticles Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-25 Toscano G. Alaniz, Janet A. Elias, Manuel Leon, Alejandro Torres-Castro, M.A. Vallejo
Glass matrices of LiBO doped with Dy, Yb and Cu were synthesized by melt quenching technique using different concentration of copper nanoparticles. The study and analysis are centered in shielding radiation. The samples amorphous nature was corroborated by X-Ray diffraction (XRD) and nanoparticles size distribution was obtained by transmittance electron microscopy (TEM). Optical characterizations used
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Novel liquid dosimeters for low-energy electron beam irradiation in low and medium dose ranges Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-24 Joana K. Besecke, Daniel Ullrich, Elizabeth von Hauff, Tobias Teichmann, Marleen Dietze, Ulla König, Simone Schopf
Low-energy electron beam irradiation, which refers to the treatment of matter with accelerated electrons at energies below 300 keV, is gaining attention for many applications in life sciences. In the scope of vaccine production, low-energy electron irradiation is an efficient and chemical free technology to inactivate viruses. Low-energy electron beam irradiation has also been proposed to be a powerful
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Anomalous X-ray pulse responses in MAPbBr3 single crystal-based detectors Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-24 Beomjun Park, Juyoung Ko, Jangwon Byun, Sandeep Pandey, Man-Jong Lee
Organic-inorganic perovskite single crystals (SCs) are considered promising semiconductors for high-sensitivity X-ray detectors because of their strong X-ray interaction, low-temperature processability, and excellent properties such as long diffusion length, low defect density, and long carrier lifetime. However, the specific pulse response of MAPbBr SC-based X-ray detectors frequently exhibits a tail
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Determination of organ doses in thyroid treatments with radioactive iodine by Monte Carlo simulation Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-23 S. Oliver, J. Cases, B. Juste, R. Miró, G. Verdú
I-131 is a radioisotope widely used in nuclear medicine for the treatment of pathologies such as thyroid cancer or hyperthyroidism. When I-131 is ingested, it rapidly accumulates in the thyroid gland, emitting radiation that affects the targeted thyroid tissue while also impacting other organs. To ensure patients receive the appropriate dose for desired therapeutic outcomes while minimizing the risk
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Off-axis spectrum and small signal gain of dual harmonic planar undulator Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-20 Mahazbeen Sayed, Hussain Jeevakhan, Kamal Kumar Kushwaha
The spectral properties of the spontaneous undulator radiation generated from the dual harmonic planar undulator configuration are analyzed. The effect of changing the observation point away from the axis on radiation is demonstrated. The expressions for off-axis undulator radiation and off-axis small signal gain are derived using the generalized Bessel function. The emission of radiation at odd and
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Low-pressure measurements of energy depositions in nanometre objects with a single ionisation chamber in a 60Co beam using the variance–covariance method Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-20 Linda Eliasson, Jan Lillhök, Torbjörn Bäck, Robert Billnert-Maróti, Christian Iacobaeus
Dose-mean lineal energies were measured using the variance–covariance method and commercial ionisation chambers in a therapy level Co field at several different air pressures. The results confirmed the trend from previous studies and the experimental data was extended down to a simulated object diameter of 4.2 nm using a low-noise electrometer. The variance–covariance method was adapted to consecutive
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Characterization of a commercial PIN diode for radiotherapy photon beam dosimetry Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-20 Iandra T. Silva, Karen Pieri, Lucas D. Albino, Thiago S. Fontana, Matheus F. dos Santos, Ernesto Roesler, Charles N.P. Oliveira, Viviane K. Asfora, Josemary A.C. Gonçalves, Helen J. Khoury, Carmen C. Bueno
The dosimetric characterization of a commercial diode (BPW-34) was performed using a True Beam accelerator (Varian), with flattening filter (FF) photon beams of 6 and 15 MV and flattening filter free (FFF) of 6 MVFFF. The main performance characteristics, namely dose response, energy and dose rate dependence, field output factor, and percentage depth dose profile (PDD), were compared with those available
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OSL and PTOSL of dosimetric materials: Observation of the luminescence after exposure to 90Sr+90Y source and LEDs in ultraviolet range Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-19 Patrícia L. Antonio, Iury S. Silveira, Linda V.E. Caldas
The study of luminescence phenomena by crystal-based radiation detectors is suitable for radiation dosimetry, once the light emitted by them enables the quantification of their deposited radiation energy. The light emission can be promoted when a material is illuminated with a certain wavelength and time interval, as in the optically stimulated luminescence (OSL) and photo-transferred OSL (PTOSL) processes
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New experimental measurements of X-ray emissions induced by protons of several tens of MeV on elements with Z=22 to Z=79: Toward quantitative high-energy PIXE Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-19 Quentin Mouchard, Mostafa Hazim, Charbel Koumeir, Arnaud Guertin, Ferid Haddad, Adnan Naja, Flavien Ralite, Noël Servagent, Vincent Métivier
K-shell X-ray production cross-sections measurement campaigns were carried out at the ARRONAX cyclotron with titanium, chromium, copper, molybdenum, silver and gold targets for different energies from 15 to 68 MeV. These measurements, carried out using three detectors (SDD, CdTe and HPGe), complete the database with 66 new values. Our different measurements agree with previously published data and
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Microdosimetry at the nanometre level with different techniques Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-18 Anna Bianchi, Anna Selva, Linda Eliasson, Jan Lillhök, Hans Rabus, Valeria Conte
Microdosimetry provides the capability to measure probabilistic distributions of lineal energy in micrometer or sub-micrometer-sized volumes. The shape of these distributions is dependent on the size of the sensitive volume used for scoring, meant to approximate that of the relevant biological target. Recognizing that biological damage and its repair processes occur at different length scales, initiated
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Investigation of structural, photo and thermoluminescence properties of YAGG:Ce nanogarnet for medical dosimetry application Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-18 S. Saadi, A. Boukerika, D.E. Kdib, A. Bentabet, S. Mahtout, Z. Lounis-Mokrani
Cerium-doped yttrium aluminum gallium garnet (YAGG:Ce) nanophosphors were synthesized using the sol-gel method. Mixed garnet of YAlGaO:Ce was prepared with varying gallium content: x = 0, 1, 2 and 3 Ga. The effect of gallium substitutions on the structural, photo and thermoluminescence properties of the prepared nanophosphors were studied by X-ray diffraction (XRD), photoluminescence (PL) and thermoluminescence
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A new methodology for efficiency calibration of uncharacterized Ge detectors by using characterized Ge detectors Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-18 A. Barba-Lobo, V.M. Expósito-Suárez, J.A. Suárez-Navarro, J.P. Bolívar
The measurement of gamma emitters natural radionuclides is a very relevant subject in environmental radioactivity in many fields. For this, a valid calibration based on the full-energy peak efficiency () is essential, which can be carried out for gamma-ray spectrometry using Monte Carlo codes (Geant4, LabSOCS, MNCP, etc.) without needing a source preparation and with much less time consuming compared
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A random sampling method for radiobiological modeling Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-18 Glenn C. Ma
Various radiobiological models have been proposed to describe the clonogenic cell survival after radiation. Least square model fitting to match experimental survival data can be tedious and sometimes difficult for complex models with multiple parameters. In this work, a random sampling method is developed to optimize the model parameters automatically to achieve best fitting with the experimental data
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PUFFIn – A user friendly fast interface for calculating and visualizing the dose distribution in materials Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-17 Randolph Schwarz, Francesc Salvat, Dion Sunderland, Mie Azuma, Clara Boutros, Suresh Pillai, Florent Kuntz, Abbas Nasreddine, Joshua Pagh, David Wootan, Mark K. Murphy
This article describes a new graphical user interface that uses the PENELOPE Monte Carlo code to calculate dose distributions in materials. It is named PUFFIn, for the Penelope User-Friendly Fast Interface and was developed as an educational and scoping analysis tool for non-experts in radiation modeling. PUFFIn enables the user to visualize and compare the dose distributions in objects (e.g., sterilized
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Simultaneous 137Cs and 90Sr/90Y detection in water on an LS counter: A quick response in a case of radiation emergency Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-16 Ivana Stojković, Nataša Todorović, Jovana Nikolov, Snežana Papović, Slobodan Gadžurić, Milan Vraneš
This research investigates the possibility to simultaneously measure Cs and Sr/Y content in water by Liquid Scintillation Counter Quantulus 1220. The method relies on the Cherenkov counting and does not require sample pre-treatment. During nuclear emergencies, a potential radioactive release should be promptly detected, and this technique ensures measurement results 2 h after the sample's arrival to
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Kinetic analysis and dosimetric characteristics of the thermoluminescent glow curve of aquamarine (Be3Al2(SiO3)6:Fe) Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-16 Rafael Cogollo, Jorge Herrera, Omar D. Gutiérrez
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Tailoring electrical properties of PVC/PEC/Co3O4 nanocomposites by electron beam irradiation for advanced medium voltage cable applications Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-16 A.M. Elbasiony, A.I. Sharshir
This study aimed to investigate the effects of electron beam irradiation on the structural, optical, and electrical properties of polyvinyl chloride/pectin (PVC/PEC) nanocomposites incorporating hexagonal nanoplate CoO. Hexagonal nanoplate CoO was synthesized and incorporated into PVC/PEC blends at 5 wt%. The nanocomposites were subjected to electron beam irradiation at varying doses (0, 10, 20, and
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A deep neural network for predicting soil texture using airborne radiometric data Radiat. Phys. Chem. (IF 2.9) Pub Date : 2024-04-16 Andrea Maino, Matteo Alberi, Alessio Barbagli, Enrico Chiarelli, Tommaso Colonna, Michele Franceschi, Fabio Gallorini, Enrico Guastaldi, Nicola Lopane, Fabio Mantovani, Dario Petrone, Silvio Pierini, Kassandra Giulia Cristina Raptis, Virginia Strati, Gerti Xhixha
The ternary nature of soil texture, defined by its proportions of clay, silt, and sand, makes it challenging to predict through linear regression models from other soil attributes and auxiliary variables. The most promising results in this field have been recently achieved by Machine Learning methods which are able to derive non-linear, non-site-specific models to predict soil texture. In this paper