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

Ronald White; Wade Tattersall; G Boyle; R Robson; Sasa Dujko; Z Petrovic; Ana Bankovic; Michael Brunger; J P Sullivan; S Buckman; Gustavo Garcia

doi:10.1016/j.apradiso.2013.01.008

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

Ronald White, Wade Tattersall, G Boyle, R Robson, Sasa Dujko, Z Petrovic, Ana Bankovic, Michael Brunger, J P Sullivan, S Buckman, Gustavo Garcia

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

59 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
Issue number	Part B
DOIs	https://doi.org/10.1016/j.apradiso.2013.01.008
Publication status	Published - Jan 2014

Keywords

Cross sections
Monte-Carlo simulation
Positron transport
Radiation damage modeling
Swarm physics

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10.1016/j.apradiso.2013.01.008

Cite this

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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.",

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

AU - White, Ronald

AU - Tattersall, Wade

AU - Boyle, G

AU - Robson, R

AU - Dujko, Sasa

AU - Petrovic, Z

AU - Bankovic, Ana

AU - Brunger, Michael

AU - Sullivan, J P

AU - Buckman, S

AU - Garcia, Gustavo

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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DO - 10.1016/j.apradiso.2013.01.008

M3 - Article

SN - 0969-8043

VL - 83

SP - 77

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JO - APPLIED RADIATION AND ISOTOPES

JF - APPLIED RADIATION AND ISOTOPES

IS - Part B

ER -

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

Abstract

Keywords

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