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 (<150 eV) 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.
authors: ARC Centre for Antimatter-Matter Studies, School of Engineering and Physical Sciences, James Cook University, Townsville 4810, Australia. Electronic address: ronald.white@jcu.edu.au.
authors: R D
authors: RD
authors: White
authors: W
authors: W
authors: Tattersall
authors: G
authors: G
authors: Boyle
authors: R E
authors: RE
authors: Robson
authors: S
authors: S
authors: Dujko
authors: Z Lj
authors: ZLj
authors: Petrovic
authors: A
authors: A
authors: Bankovic
authors: M J
authors: MJ
authors: Brunger
authors: J P
authors: JP
authors: Sullivan
authors: S J
authors: SJ
authors: Buckman
authors: G
authors: G
authors: Garcia
mesh_terms: D004583:Electrons; D005740:Gases / Q000737:chemistry*; D008962:Models, Theoretical; D009010:Monte Carlo Method
chemical_list: D005740:Gases
keywords: Cross sections; Monte-Carlo simulation; Positron transport; Radiation damage modeling; Swarm physics