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Title: Simulation of Auger electron emission from nanometer-size gold targets using the Geant4 Monte Carlo simulation toolkit

We report that a revised atomic deexcitation framework for the Geant4 general purpose Monte Carlo toolkit capable of simulating full Auger deexcitation cascades was implemented in June 2015 release (version 10.2 Beta). An overview of this refined framework and testing of its capabilities is presented for the irradiation of gold nanoparticles (NP) with keV photon and MeV proton beams. The resultant energy spectra of secondary particles created within and that escape the NP are analyzed and discussed. It is anticipated that this new functionality will improve and increase the use of Geant4 in the medical physics, radiobiology, nanomedicine research and other low energy physics fields.
Authors:
ORCiD logo [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9]
  1. Ton Duc Thang University, Ho Chi Minh City (Vietnam). Division of Nuclear Physics and Faculty of Applied Sciences; Univ. Bordeaux, CENBG, Gradignan (France); CNRS, IN2P3, CENBG, Gradignan (France)
  2. Princeton Univ., NJ (United States). Department of Physics
  3. Ecoanalytica, Moscow (Russia); Geant4 Associates International Ltd, Hebden Bridge (United Kingdom)
  4. SWHARD srl, Genova (Italy)
  5. Queen's University Belfast, Northern Ireland (United Kingdom). School of Mathematics and Physics
  6. Universidade Estadual de Campinas, SP (Brazil). Instituto de Fisica Gleb Wataghin
  7. Universite Saint Joseph, Beirut (Lebanon). Faculty of Sciences, Department of Physics
  8. Univ. of Notre Dame, IN (United States). Notre Dame Radiation Laboratory
  9. Ton Duc Thang University, Ho Chi Minh City (Vietnam). Division of Nuclear Physics and Faculty of Applied Sciences
Publication Date:
Report Number(s):
LLNL-JRNL-737989
Journal ID: ISSN 0168-583X
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
Additional Journal Information:
Journal Volume: 372; Journal Issue: C; Journal ID: ISSN 0168-583X
Publisher:
Elsevier
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Geant4; Auger electrons; Monte Carlo; Electromagnetic interactions
OSTI Identifier:
1426131