skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ab initio calculation of differential and total cross sections for the ionization of water vapor by protons

Abstract

We present both differential and total cross sections for the direct ionization of water vapor by protons in the incident energy range 0.1-100 MeV. Different theoretical models are investigated within the framework of the Born approximation in order to evaluate the influence of each pairwise Coulomb interaction term among the ejected electron, the scattered proton, and the residual ionized target in the final state. In all these models, the ground state of the water molecule is described by means of an accurate molecular wave function proposed by Moccia [J. Chem. Phys. 40, 2186 (1964)]. The results of these full ab initio quantum-mechanical treatments are compared to experimental data. Good agreement is generally observed, showing that sophisticated Born models are sufficient to explain all the experimental data, including doubly differential, singly differential, and total cross sections.

Authors:
; ;  [1];  [2]
  1. Universite Paul Verlaine-Metz, Laboratoire de Physique Moleculaire et des Collisions, ICPMB (FR 2843), Institut de Physique, 1 rue Arago, 57078 Metz Cedex 3 (France)
  2. Nuclear Physics Institute, Moscow State University, Moscow 119992 (Russian Federation)
Publication Date:
OSTI Identifier:
20982134
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.75.022720; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BORN APPROXIMATION; DIFFERENTIAL CROSS SECTIONS; ELECTRONS; GROUND STATES; IONIZATION; KEV RANGE 100-1000; MEV RANGE; MOLECULES; PROTONS; QUANTUM MECHANICS; TOTAL CROSS SECTIONS; WATER; WATER VAPOR; WAVE FUNCTIONS

Citation Formats

Boudrioua, O., Champion, C., Dal Cappello, C., and Popov, Y. V. Ab initio calculation of differential and total cross sections for the ionization of water vapor by protons. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.022720.
Boudrioua, O., Champion, C., Dal Cappello, C., & Popov, Y. V. Ab initio calculation of differential and total cross sections for the ionization of water vapor by protons. United States. doi:10.1103/PHYSREVA.75.022720.
Boudrioua, O., Champion, C., Dal Cappello, C., and Popov, Y. V. Thu . "Ab initio calculation of differential and total cross sections for the ionization of water vapor by protons". United States. doi:10.1103/PHYSREVA.75.022720.
@article{osti_20982134,
title = {Ab initio calculation of differential and total cross sections for the ionization of water vapor by protons},
author = {Boudrioua, O. and Champion, C. and Dal Cappello, C. and Popov, Y. V.},
abstractNote = {We present both differential and total cross sections for the direct ionization of water vapor by protons in the incident energy range 0.1-100 MeV. Different theoretical models are investigated within the framework of the Born approximation in order to evaluate the influence of each pairwise Coulomb interaction term among the ejected electron, the scattered proton, and the residual ionized target in the final state. In all these models, the ground state of the water molecule is described by means of an accurate molecular wave function proposed by Moccia [J. Chem. Phys. 40, 2186 (1964)]. The results of these full ab initio quantum-mechanical treatments are compared to experimental data. Good agreement is generally observed, showing that sophisticated Born models are sufficient to explain all the experimental data, including doubly differential, singly differential, and total cross sections.},
doi = {10.1103/PHYSREVA.75.022720},
journal = {Physical Review. A},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}