Implementation of new physics models for low energy electrons in liquid water in Geant4-DNA |
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| Institution: | 1. CRCT, UMR1037 INSERM, Université Paul Sabatier, F-31037 Toulouse, France;2. UMR1037, CRCT, Université Toulouse III-Paul Sabatier, F-31037 Toulouse, France;3. CNRS, LAPLACE, F-31062 Toulouse, France;4. Université Toulouse III-Paul Sabatier, UPS, INPT, LAPLACE, F-31062 Toulouse, France;5. Univ. Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France;6. CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France;1. CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France;2. CNRS, INCIA, UMR 5287, F-33400 Talence, France;3. University of New Mexico, Department of Computer Science, Albuquerque, NM, USA;4. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, SP, Brazil;5. Geant4 Associates International Ltd, United Kingdom;6. CEA Saclay, IRAMIS, LIDYL, Radiation Physical Chemistry Group, F-91191 Gif sur Yvette Cedex, France;7. CNRS, UMR3299, SIS2M, F-91191 Gif sur Yvette Cedex, France;8. Nuclear Physics Institute of the ASCR, Prague, Czech Republic;9. Saint Joseph University, Faculty of Sciences, Department of Physics, Mkalles, Beirut, Lebanon;10. Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Radiation Protection, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany;11. Ecoanalytica, 119899 Moscow, Russia;12. SwHaRD s.r.l., via Buccari 9, 16153 Genova, Italy;13. ESA-ESTEC, 2200 AG Noordwijk, The Netherlands;14. Division of Nuclear Physics & Faculty of Applied Sciences, Ton Duc Thang University, Tan Phong Ward, District 7, Ho Chi Minh City, Vietnam;1. Division of Nuclear Physics, Ton Duc Thang University, Tan Phong Ward, District 7, Ho Chi Minh City, Viet Nam;2. Faculty of Applied Sciences, Ton Duc Thang University, Tan Phong Ward, District 7, Ho Chi Minh City, Viet Nam;3. Institut Pluridisciplinaire Hubert Curien/IN2P3/CNRS, Strasbourg, France;4. Univ. Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France;5. CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France;6. CNRS, INCIA, UMR 5287, F-33400 Talence, France;7. Instituto de FísicaGleb Wataghin, Universida de Estadual de Campinas, SP, Brazil;8. Université Saint Joseph, Faculty of Science, Department of Physics, Beirut, Lebanon;9. The Open University, Faculty of Science, Department of Physical Sciences, Walton Hall, MK7 6AA Milton Keynes, United Kingdom;10. Ecoanalytica, 119899 Moscow, Russia;11. Proton Therapy Center, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Republic of Korea;1. Université Bordeaux 1, CENBG, UMR 5797, F-33170 Gradignan, France;2. CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France;3. Research Group of Theoretical Chemistry and Molecular Modelling, Hasselt University, Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium;4. CNRS, INCIA, UMR 5287, F-33400 Talence, France;5. LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Grenoble INP, 38026 Grenoble, France;6. CEA, LIST, F-91191 Gif-sur-Yvette, France;7. Departamento de Física, Universidade Federal de Sergipe, São Cristóvão, Brazil;8. Université de Franche-Comté, Laboratoire Chrono-Environnement, UMR CNRS 6249, Besançon, France;9. Laboratoire Plasmas et Conversion d’Énergie, UMR 5213 CNRS-INPT-UPS, Université Paul Sabatier, Toulouse, France;10. Laboratoire de Physique Corpusculaire, UMR 6533, Aubière, France;11. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, SP, Brazil;12. School of Physics, Monash University, Melbourne, Australia;13. Université Saint Joseph, Science Faculty, Department of Physics, Beirut, Lebanon;14. The Open University, Faculty of Science, Department of Physical Sciences, Walton Hall, MK7 6AA Milton Keynes, United Kingdom;15. Ecoanalytica, 119899 Moscow, Russia;p. Geant4 Associates International Ltd., United Kingdom;q. Thermo Fisher Scientific, Rapsgatan 7, 75137 Uppsala, Sweden;r. Institut Bergonié, Bordeaux, France;s. CRCT, UMR 1037 INSERM, Université Paul Sabatier, Toulouse, France;1. Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA;2. University of Tennessee, Knoxville, TN, USA;3. SLAC National Accelerator Laboratory, Menlo Park, CA, USA;4. University of California San Francisco Comprehensive Cancer Center, San Francisco, CA, USA;1. Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany;2. Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PRP/HOM/SDE/LDRI, B.P 17, 92262 Fontenay aux Roses, France;3. Centre for Medical Radiation Physics (CMRP), University of Wollongong, Wollongong, New South Wales 2522, Australia;1. Medical Physics Laboratory, University of Ioannina Medical School, 45110 Ioannina, Greece;2. Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 110 00 Prague, Czech Republic;3. Université de Bordeaux, Centre d’Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du solarium, 33175 Gradignan, France;4. CNRS/IN2P3, Centre d’Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du solarium, 33175 Gradignan, France;5. Division of Applied Statistics, Institute of Labor (GSEE), 10681 Athens, Greece |
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| Abstract: | A new alternative set of elastic and inelastic cross sections has been added to the very low energy extension of the Geant4 Monte Carlo simulation toolkit, Geant4-DNA, for the simulation of electron interactions in liquid water. These cross sections have been obtained from the CPA100 Monte Carlo track structure code, which has been a reference in the microdosimetry community for many years. They are compared to the default Geant4-DNA cross sections and show better agreement with published data.In order to verify the correct implementation of the CPA100 cross section models in Geant4-DNA, simulations of the number of interactions and ranges were performed using Geant4-DNA with this new set of models, and the results were compared with corresponding results from the original CPA100 code. Good agreement is observed between the implementations, with relative differences lower than 1% regardless of the incident electron energy.Useful quantities related to the deposited energy at the scale of the cell or the organ of interest for internal dosimetry, like dose point kernels, are also calculated using these new physics models. They are compared with results obtained using the well-known Penelope Monte Carlo code. |
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| Keywords: | Geant4-DNA Monte-Carlo track structure code Ionizing radiation Low energy electrons |
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