TY - JOUR
T1 - Scattering data for modelling positron tracks in gaseous and liquid water
AU - Blanco, Francisco
AU - Roldan, A
AU - Krupa, K
AU - McEachran, R
AU - White, Ronald
AU - Marjanovic, Srdjan
AU - Petrovic, Z
AU - Brunger, Michael
AU - Machacek, J
AU - Buckman, S
AU - Sullivan, J P
AU - Chiari, Luca
AU - Limao-Vieira, Paulo
AU - Garcia, Gustavo
PY - 2016/6/15
Y1 - 2016/6/15
N2 - We present in this study a self-consistent set of scattering cross sections for positron collisions with water molecules, in the energy range 0.1-10 000 eV, with the prime motivation being to provide data for modelling purposes. The structure of the database is based on a new model potential calculation, including interference terms, which provides differential and integral elastic as well as integral inelastic positron scattering cross sections for water molecules over the whole energy range considered here. Experimental and theoretical data available in the literature have been integrated into the database after a careful analysis of their uncertainties and their self-consistency. These data have been used as input parameters for a step-by-step Monte Carlo simulation procedure, providing valuable information on energy deposition, positron range, and the relative percentages of specific interactions (e.g. positronium formation, direct ionisation, electronic, vibrational and rotational excitations) in gaseous and liquid water.
AB - We present in this study a self-consistent set of scattering cross sections for positron collisions with water molecules, in the energy range 0.1-10 000 eV, with the prime motivation being to provide data for modelling purposes. The structure of the database is based on a new model potential calculation, including interference terms, which provides differential and integral elastic as well as integral inelastic positron scattering cross sections for water molecules over the whole energy range considered here. Experimental and theoretical data available in the literature have been integrated into the database after a careful analysis of their uncertainties and their self-consistency. These data have been used as input parameters for a step-by-step Monte Carlo simulation procedure, providing valuable information on energy deposition, positron range, and the relative percentages of specific interactions (e.g. positronium formation, direct ionisation, electronic, vibrational and rotational excitations) in gaseous and liquid water.
KW - model potential calculations
KW - Monte Carlo simulation
KW - positron-molecule scattering
UR - http://www.scopus.com/inward/record.url?scp=84978200275&partnerID=8YFLogxK
U2 - 10.1088/0953-4075/49/14/145001
DO - 10.1088/0953-4075/49/14/145001
M3 - Article
SN - 0953-4075
VL - 49
SP - Art: 145001
JO - Journal of Physics B-Atomic Molecular and Optical Physics
JF - Journal of Physics B-Atomic Molecular and Optical Physics
IS - 14
M1 - 145001
ER -