Modeling proton and alpha elastic scattering in liquid water in Geant4-DNA

Autor(es):Mostrar menos -

Tran, H. N. ^{[1, 2]} ; El Bitar, Z. ^[3] ; Champion, C. ^{[4, 5]} ; Karamitros, M. ^{[6, 4, 5]} ; Bernal, M. A. ^[7] ; Francis, Z. ^{[8, 9]} ; Ivantchenko, V. ^[10] ; Lee, S. B. ^[11] ; Shin, J. I. ^[11] ; Incerti, S. ^{[4, 5]} ; Collaboration, Geant4-DNA

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^[1] Ton Duc Thang Univ, Div Nucl Phys, Tan Phong Ward, Ho Chi Minh City - Vietnam

^[2] Ton Duc Thang Univ, Fac Sci Appl, Tan Phong Ward, Ho Chi Minh City - Vietnam

^[3] CNRS, IN2P3, Inst Pluridisciplinaire Hubert Curien, 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] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13081970 Campinas, SP - Brazil

^[8] Univ St Joseph, Fac Sci, Dept Phys, Beirut - Lebanon

^[9] Open Univ, Fac Sci, Dept Phys Sci, Milton Keynes MK7 6AA, Bucks - England

^[10] Ecoanalytica, Moscow 119899 - Russia

^[11] Natl Canc Ctr, Proton Therapy Ctr, Goyang Si 410769, Gyeonggi Do - South Korea

• Tipo de documento: Artigo Científico
• Fonte: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIO; v. 343, p. 132-137, JAN 15 2015.
• Citações Web of Science: 8

Resumo

Elastic scattering of protons and alpha (a) particles by water molecules cannot be neglected at low incident energies. However, this physical process is currently not available in the ``Geant4-DNA{''} extension of the Geant4 Monte Carlo simulation toolkit. In this work, we report on theoretical differential and integral cross sections of the elastic scattering process for 100 eV-1 MeV incident protons and for 100 eV-10 MeV incident a particles in liquid water. The calculations are performed within the classical framework described by Everhart et al., Ziegler et al. and by the ICRU 49 Report. Then, we propose an implementation of the corresponding classes into the Geant4-DNA toolkit for modeling the elastic scattering of protons and a particles. Stopping powers as well as ranges are also reported. Then, it clearly appears that the account of the elastic scattering process in the slowing-down of the charged particle improves the agreement with the existing data in particular with the ICRU recommendations. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/51594-2 - Desenvolvimento de um sistema computacional para a simulação da interação da radiação ionizante com o material genético humano
• Beneficiário: Mario Antonio Bernal Rodriguez
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores