Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

R. D. White; W. Tattersall; G. Boyle; R. E. Robson; S. Dujko; Z. Lj Petrovic; A. Bankovic; M. J. Brunger; J. P. Sullivan; S. J. Buckman; G. Garcia

doi:10.1016/j.apradiso.2013.01.008

Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

R. D. White^*, W. Tattersall, G. Boyle, R. E. Robson, S. Dujko, Z. Lj Petrovic, A. Bankovic, M. J. Brunger, J. P. Sullivan, S. J. Buckman, G. Garcia

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

We present a study of electron and positron transport in water in both the gaseous and liquid states using a Boltzmann equation analysis and a Monte-Carlo simulation technique. We assess the importance of coherent scattering processes when considering transport of electrons/positrons in dense gases and liquids. We highlight the importance of electron and positron swarm studies and experiments as a test of the accuracy and completeness of cross-sections, as well as a technique for benchmarking Monte-Carlo simulations. The thermalization of low-energy positrons (<150eV) in water is discussed and the sensitivity of the profiles to the form of the cross-sections in this energy region, and assumptions in the microscopic processes, is considered.

Original language	English
Pages (from-to)	77-85
Number of pages	9
Journal	Applied Radiation and Isotopes
Volume	83
DOIs	https://doi.org/10.1016/j.apradiso.2013.01.008
Publication status	Published - Jan 2014

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title = "Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance",

abstract = "We present a study of electron and positron transport in water in both the gaseous and liquid states using a Boltzmann equation analysis and a Monte-Carlo simulation technique. We assess the importance of coherent scattering processes when considering transport of electrons/positrons in dense gases and liquids. We highlight the importance of electron and positron swarm studies and experiments as a test of the accuracy and completeness of cross-sections, as well as a technique for benchmarking Monte-Carlo simulations. The thermalization of low-energy positrons (<150eV) in water is discussed and the sensitivity of the profiles to the form of the cross-sections in this energy region, and assumptions in the microscopic processes, is considered.",

keywords = "Cross sections, Monte-Carlo simulation, Positron transport, Radiation damage modeling, Swarm physics",

author = "White, {R. D.} and W. Tattersall and G. Boyle and Robson, {R. E.} and S. Dujko and Petrovic, {Z. Lj} and A. Bankovic and Brunger, {M. J.} and Sullivan, {J. P.} and Buckman, {S. J.} and G. Garcia",

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T1 - Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

AU - White, R. D.

AU - Tattersall, W.

AU - Boyle, G.

AU - Robson, R. E.

AU - Dujko, S.

AU - Petrovic, Z. Lj

AU - Bankovic, A.

AU - Brunger, M. J.

AU - Sullivan, J. P.

AU - Buckman, S. J.

AU - Garcia, G.

PY - 2014/1

Y1 - 2014/1

N2 - We present a study of electron and positron transport in water in both the gaseous and liquid states using a Boltzmann equation analysis and a Monte-Carlo simulation technique. We assess the importance of coherent scattering processes when considering transport of electrons/positrons in dense gases and liquids. We highlight the importance of electron and positron swarm studies and experiments as a test of the accuracy and completeness of cross-sections, as well as a technique for benchmarking Monte-Carlo simulations. The thermalization of low-energy positrons (<150eV) in water is discussed and the sensitivity of the profiles to the form of the cross-sections in this energy region, and assumptions in the microscopic processes, is considered.

AB - We present a study of electron and positron transport in water in both the gaseous and liquid states using a Boltzmann equation analysis and a Monte-Carlo simulation technique. We assess the importance of coherent scattering processes when considering transport of electrons/positrons in dense gases and liquids. We highlight the importance of electron and positron swarm studies and experiments as a test of the accuracy and completeness of cross-sections, as well as a technique for benchmarking Monte-Carlo simulations. The thermalization of low-energy positrons (<150eV) in water is discussed and the sensitivity of the profiles to the form of the cross-sections in this energy region, and assumptions in the microscopic processes, is considered.

KW - Cross sections

KW - Monte-Carlo simulation

KW - Positron transport

KW - Radiation damage modeling

KW - Swarm physics

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U2 - 10.1016/j.apradiso.2013.01.008

DO - 10.1016/j.apradiso.2013.01.008

M3 - Article

SN - 0969-8043

VL - 83

SP - 77

EP - 85

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

ER -

Low-energy electron and positron transport in gases and soft-condensed systems of biological relevance

Abstract

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