[HTML][HTML] Electron and Positron Impact Ionization of Molecules

L Nagy, I Tóth, RI Campeanu - Atoms, 2024 - mdpi.com
We review our group's most significant results concerning the collision of positrons and
electrons with small molecules. Total and triple differential cross sections for the ionization of …

Positron scattering from molecules: An experimental cross section compilation for positron transport studies and benchmarking theory

MJ Brunger, SJ Buckman, K Ratnavelu - Journal of Physical and …, 2017 - pubs.aip.org
We present a compilation of recommended positron–molecule cross sections for a range of
scattering processes including elastic scattering, vibrational excitation, discrete electronic …

Positron-impact ionization, positronium formation, and electronic excitation cross sections for diatomic molecules

JP Marler, CM Surko - Physical Review A—Atomic, Molecular, and Optical …, 2005 - APS
Absolute measurements are presented for the positron-impact cross sections for positronium
formation, direct ionization, and total ionization of the diatomic molecules N 2, CO, and O 2 …

Binary-encounter dipole model for positron-impact direct ionization

K Fedus, GP Karwasz - Physical Review A, 2019 - APS
In the present work we study the applicability of the binary-encounter-dipole (BED) model
and its simpler version the binary-encounter-Bethe model for positron-impact direct …

Screening effects in the ionization of molecules by positrons

I Tóth, RI Campeanu, V Chiş, L Nagy - Physics Letters A, 2006 - Elsevier
Theoretical DWBA calculations for the ionization of N2, CO, CO2 and CH4 molecules are
presented. Previous calculations are improved by calculating the wavefunctions of the …

Positronium formation and ionization of atoms and diatomic molecules by positron impact

S Singh, B Antony - Europhysics Letters, 2017 - iopscience.iop.org
In this article, we aim to calculate positronium formation and ionization cross-sections (direct
and total) for C, N and O atoms and their diatomic molecules. A modified version of the well …

Positron impact ionization of CO and CO2

RI Campeanu, V Chis, L Nagy, AD Stauffer - Physics Letters A, 2005 - Elsevier
We have applied our CPE distorted wave model using Gaussian target representations to
the heteronuclear molecules CO and CO2. We found that this theoretical model works well …

Total and ionization cross-sections of N2 and CO by positron impact: Theoretical investigations

HN Kothari, KN Joshipura - Pramana, 2011 - Springer
In this paper we report our calculations on several important total cross-sections (TCSs) of
positron impact on isoelectronic N 2 and CO molecules, treated in the complex spherical …

Differential studies and projectile charge effects in ionization of molecular nitrogen by positron and electron impact

OG De Lucio, RD DuBois - Physical Review A, 2016 - APS
Singly, doubly, and triply differential information, obtained from coincidence measurements,
are presented for 250-eV positron-and electron-impact ionization of molecular nitrogen …

Transport coefficients for positron swarms in nitrogen

A Banković, JP Marler, M Šuvakov, G Malović… - Nuclear Instruments and …, 2008 - Elsevier
Monte Carlo simulations of positron transport in nitrogen have been performed based on a
complete set of cross sections that has been updated as a result of both experimental and …