Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113703
M.S. Al-Buriahi, Marzoqa.M. Alnairi, Mine Kirkbinar, Hind Saeed Alzahrani, B. Alshahrani, Beriham Basha, Norah Alomayrah, I.O. Olarinoye
{"title":"Structure and radiation shielding properties of transparent Na2O–ZnO–B2O3 glass system modified by TiO2 addition","authors":"M.S. Al-Buriahi, Marzoqa.M. Alnairi, Mine Kirkbinar, Hind Saeed Alzahrani, B. Alshahrani, Beriham Basha, Norah Alomayrah, I.O. Olarinoye","doi":"10.1016/j.radphyschem.2026.113703","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113703","url":null,"abstract":"","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"39 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113702
Fereshte Saheli, Luka Pasariček, Marija Majer
Due to its close relationship with Relative Biological Effectiveness (RBE), accurate determination of average Linear Energy Transfer (LET) distribution is of high importance in radiation therapy.
{"title":"Multi-Parameter Comparison of LET Distribution Calculations in Proton Beams Using Geant4 and PHITS","authors":"Fereshte Saheli, Luka Pasariček, Marija Majer","doi":"10.1016/j.radphyschem.2026.113702","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113702","url":null,"abstract":"Due to its close relationship with Relative Biological Effectiveness (RBE), accurate determination of average Linear Energy Transfer (LET) distribution is of high importance in radiation therapy.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"5 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113696
Arícia Ravane Pereira da Cruz, Lucas Delbem Albino, Ernesto Roesler, Claudio C. B. Viegas, Gabriel Henrique Rocha Barreto de França, Josemary Angélica Corrêa Gonçalves, Carmen Cecília Bueno, Vinícius Saito Monteiro de Barros, Viviane Khoury Asfora
In radiotherapy practice, external dosimetry audits represent a valuable tool for identifying systematic errors, improving the quality and safety of treatments, and ensuring consistency in clinical dosimetry procedures. Despite their proven importance, many radiotherapy centers are still unable to access these audits, especially in resource-constrained settings. With this in mind, the present study aimed to validate an independent postal dosimetry audit service for photon radiotherapy, currently being developed at the Department of Nuclear Energy of Federal University of Pernambuco (DEN/UFPE), using alanine-EPR dosimeters. The proposed system features a structure designed to support six dosimeter holders simultaneously, allowing the evaluation of central-axis and off-axis dose, as well as quality index, flatness and symmetry of photon beams generated by linear accelerators. The system’s performance was assessed by comparing measurements from the DEN/UFPE QA setup with results from the TLD-based dosimetry audit program of the Brazilian National Cancer Institute (PQRT/INCA) and with reference data obtained using a PTW 30013 ionization chamber under identical irradiation conditions. The interlaboratory comparison results demonstrated agreement among the systems, with dose deviations relative to the ionization chamber not exceeding 2.0% for the DEN/UFPE system and 1.9% for the PQRT/INCA system. Therefore, these findings provide robust evidence supporting the reliability, accuracy, and overall effectiveness of the proposed alanine-based postal dosimetry audit system, confirming its suitability for clinical implementation.
{"title":"Validation of an alanine-based postal dosimetry audit system for radiotherapy quality assurance","authors":"Arícia Ravane Pereira da Cruz, Lucas Delbem Albino, Ernesto Roesler, Claudio C. B. Viegas, Gabriel Henrique Rocha Barreto de França, Josemary Angélica Corrêa Gonçalves, Carmen Cecília Bueno, Vinícius Saito Monteiro de Barros, Viviane Khoury Asfora","doi":"10.1016/j.radphyschem.2026.113696","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113696","url":null,"abstract":"In radiotherapy practice, external dosimetry audits represent a valuable tool for identifying systematic errors, improving the quality and safety of treatments, and ensuring consistency in clinical dosimetry procedures. Despite their proven importance, many radiotherapy centers are still unable to access these audits, especially in resource-constrained settings. With this in mind, the present study aimed to validate an independent postal dosimetry audit service for photon radiotherapy, currently being developed at the Department of Nuclear Energy of Federal University of Pernambuco (DEN/UFPE), using alanine-EPR dosimeters. The proposed system features a structure designed to support six dosimeter holders simultaneously, allowing the evaluation of central-axis and off-axis dose, as well as quality index, flatness and symmetry of photon beams generated by linear accelerators. The system’s performance was assessed by comparing measurements from the DEN/UFPE QA setup with results from the TLD-based dosimetry audit program of the Brazilian National Cancer Institute (PQRT/INCA) and with reference data obtained using a PTW 30013 ionization chamber under identical irradiation conditions. The interlaboratory comparison results demonstrated agreement among the systems, with dose deviations relative to the ionization chamber not exceeding 2.0% for the DEN/UFPE system and 1.9% for the PQRT/INCA system. Therefore, these findings provide robust evidence supporting the reliability, accuracy, and overall effectiveness of the proposed alanine-based postal dosimetry audit system, confirming its suitability for clinical implementation.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"9 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113700
S.A. Mahdipour, M. Shafeei Sarvestani, S.B. Dabagov, A.A. Mowlavi
Radiation Pressure Acceleration (RPA) and Target Normal Sheath Acceleration (TNSA) are the two most significant methods for designing Laser-Accelerated Proton Beam (LAP) systems. LAP technology has inspired innovative applications that leverage the unique properties of proton bunches, distinguishing them from conventionally accelerated proton beams. In previous simulations, we presented a fundamental model of the proton beamline based on two pulsed-power solenoids, utilizing Monte Carlo simulations with the GEANT4 toolkit. We conducted adjustments to the magnetic field of the first solenoid and precisely calculated the flux of primary protons and secondary radiations in the beamline. This article introduces the second solenoid, providing detailed specifications and incorporating it into the previous simulations, optimizing its magnetic field. Additionally, the absorbed dose from RPA protons in a water phantom has been calculated. The simulation results demonstrated that incorporating and optimizing the second solenoid within the beamline significantly enhanced proton beam energy selection and shaping. This optimization effectively filtered out lower-energy protons, reduced the effective energy spread, and consequently shifted the maximum dose deposition to a greater depth within the water phantom. Furthermore, as the incident energy dispersion decreased, the dose profile became more concentrated, and the width of the high-dose region was reduced. Analysis of secondary neutron and photon doses also revealed that controlling the incident proton energy spectrum has a pronounced effect on reducing secondary photon doses. The calculations presented in this paper constitute a preliminary step toward completing the full RPA beamline simulation model.
{"title":"Proton absorbed dose from laser-accelerated proton beamline (LAP) based on RPA method","authors":"S.A. Mahdipour, M. Shafeei Sarvestani, S.B. Dabagov, A.A. Mowlavi","doi":"10.1016/j.radphyschem.2026.113700","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113700","url":null,"abstract":"Radiation Pressure Acceleration (RPA) and Target Normal Sheath Acceleration (TNSA) are the two most significant methods for designing Laser-Accelerated Proton Beam (LAP) systems. LAP technology has inspired innovative applications that leverage the unique properties of proton bunches, distinguishing them from conventionally accelerated proton beams. In previous simulations, we presented a fundamental model of the proton beamline based on two pulsed-power solenoids, utilizing Monte Carlo simulations with the GEANT4 toolkit. We conducted adjustments to the magnetic field of the first solenoid and precisely calculated the flux of primary protons and secondary radiations in the beamline. This article introduces the second solenoid, providing detailed specifications and incorporating it into the previous simulations, optimizing its magnetic field. Additionally, the absorbed dose from RPA protons in a water phantom has been calculated. The simulation results demonstrated that incorporating and optimizing the second solenoid within the beamline significantly enhanced proton beam energy selection and shaping. This optimization effectively filtered out lower-energy protons, reduced the effective energy spread, and consequently shifted the maximum dose deposition to a greater depth within the water phantom. Furthermore, as the incident energy dispersion decreased, the dose profile became more concentrated, and the width of the high-dose region was reduced. Analysis of secondary neutron and photon doses also revealed that controlling the incident proton energy spectrum has a pronounced effect on reducing secondary photon doses. The calculations presented in this paper constitute a preliminary step toward completing the full RPA beamline simulation model.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"46 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113710
Mohammad Marashdeh, Esraa H. Abdel-Gawad, Hanan Akhdar, Ali M. Hedaya, Mohamed Elsafi
{"title":"Effect of Pb2+ Substitution with Bi3+ on γ-Ray Shielding and Mechanical Properties of B2O3–PbO–BaO–ZnO–CaO–Bi2O3 Glass","authors":"Mohammad Marashdeh, Esraa H. Abdel-Gawad, Hanan Akhdar, Ali M. Hedaya, Mohamed Elsafi","doi":"10.1016/j.radphyschem.2026.113710","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113710","url":null,"abstract":"","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"95 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113698
Nuray Yavuzkanat, Turan Şahmaran
{"title":"Radiation Shielding and Physical Properties of ZrO2-Modified Borosilicate Glasses: A Monte Carlo, Theoretical, and AI-Based Study","authors":"Nuray Yavuzkanat, Turan Şahmaran","doi":"10.1016/j.radphyschem.2026.113698","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113698","url":null,"abstract":"","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"30 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-10DOI: 10.1016/j.radphyschem.2026.113712
John Paolo L. Lazarte, Jordan F. Madrid, John Andrew A. Luna, Patrick Jay E. Cabalar
{"title":"Artificial neural network optimization of radiation-induced graft polymerization for heavy metal adsorbents","authors":"John Paolo L. Lazarte, Jordan F. Madrid, John Andrew A. Luna, Patrick Jay E. Cabalar","doi":"10.1016/j.radphyschem.2026.113712","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113712","url":null,"abstract":"","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-09DOI: 10.1016/j.radphyschem.2026.113706
Mucize Sarıhan, Seher Polat, Sabiha Anas Boussaa, Iskender Akkurt
Computer simulation is an important and valuable method to obtain any paramaters from engineering to medical sciences. Using radiation in technology required extra care in order not to be exposed especially for ionizing raidation. Monte Carlo simulation is an easy method to obtain radiation shielding properties of any materials. The glass materials are widely used and thus their some properties should be investigated. In the present work, the gamma-neutron shielding properties of boron-oxide glasses were calculated using Phy-X/PSD code. The composition of gass samples formualted as (45-x)SiO2+xB2O3+24.5Na2O+24.5CaO+6P2O5 (where x ranged from 0, 1, 3 and 5 mol% steps) and used in this study.
{"title":"Simulation of Radiological Parameters for boron oxide reinforced Glasses","authors":"Mucize Sarıhan, Seher Polat, Sabiha Anas Boussaa, Iskender Akkurt","doi":"10.1016/j.radphyschem.2026.113706","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113706","url":null,"abstract":"Computer simulation is an important and valuable method to obtain any paramaters from engineering to medical sciences. Using radiation in technology required extra care in order not to be exposed especially for ionizing raidation. Monte Carlo simulation is an easy method to obtain radiation shielding properties of any materials. The glass materials are widely used and thus their some properties should be investigated. In the present work, the gamma-neutron shielding properties of boron-oxide glasses were calculated using Phy-X/PSD code. The composition of gass samples formualted as (45-x)SiO<ce:inf loc=\"post\">2</ce:inf>+xB<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf>+24.5Na<ce:inf loc=\"post\">2</ce:inf>O+24.5CaO+6P<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">5</ce:inf> (where x ranged from 0, 1, 3 and 5 mol% steps) and used in this study.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"314 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-09DOI: 10.1016/j.radphyschem.2026.113709
V.A. Zagaynov, М.Е. Vasyanovich, A.A. Lushnikov, I.E. Agranovski, A.A. Maslov, V.V. Maksimenko, V. Nagibin, V. Krivosheev, D.K. Zagaynov
The paper develops a model of the process of radioactive impurities deposition on aerosol particles of various sizes. For this purpose, the following problem was solved; aerosol particles are introduced into a gas system in which there is a source of radioactivity and radioactive atoms are uniformly distributed over space. It is assumed that when these radioactive atoms collide with particles, these atoms are deposited on the particles and transfer their activity to them. These processes lead to the distribution of the radioactive impurity on the particles. To find this distribution function, a system of differential equations describing the process was solved by introduction generation function. The characteristic times for the systems to reach the stationary regime were determined, and the distributions for the stationary regime were obtained. To illustrate the results obtained, an example for monodisperse aerosol particles that collide with radioactive atoms with the same decay constant has been discussed. At the same time the distribution function was obtained by numerical methods. Numerical and exact solutions are coincided. It must also be noted that the problem can be generalized to particles with a polydisperse distribution and to a system of atoms with different decay constants using numerical solution. The proposed method can be used both for radioactive systems operating in normal mode and for emergency situations.
{"title":"Deposition of radioactive admixture on aerosol nano particles","authors":"V.A. Zagaynov, М.Е. Vasyanovich, A.A. Lushnikov, I.E. Agranovski, A.A. Maslov, V.V. Maksimenko, V. Nagibin, V. Krivosheev, D.K. Zagaynov","doi":"10.1016/j.radphyschem.2026.113709","DOIUrl":"https://doi.org/10.1016/j.radphyschem.2026.113709","url":null,"abstract":"The paper develops a model of the process of radioactive impurities deposition on aerosol particles of various sizes. For this purpose, the following problem was solved; aerosol particles are introduced into a gas system in which there is a source of radioactivity and radioactive atoms are uniformly distributed over space. It is assumed that when these radioactive atoms collide with particles, these atoms are deposited on the particles and transfer their activity to them. These processes lead to the distribution of the radioactive impurity on the particles. To find this distribution function, a system of differential equations describing the process was solved by introduction generation function. The characteristic times for the systems to reach the stationary regime were determined, and the distributions for the stationary regime were obtained. To illustrate the results obtained, an example for monodisperse aerosol particles that collide with radioactive atoms with the same decay constant has been discussed. At the same time the distribution function was obtained by numerical methods. Numerical and exact solutions are coincided. It must also be noted that the problem can be generalized to particles with a polydisperse distribution and to a system of atoms with different decay constants using numerical solution. The proposed method can be used both for radioactive systems operating in normal mode and for emergency situations.","PeriodicalId":20861,"journal":{"name":"Radiation Physics and Chemistry","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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