Ordering of cross sections for electron capture from He-like targets by fast projectiles

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.21.1197· OSTI ID:5362611

Shirtcliffe, G W; Banyard, K E

The continuum-distorted-wave (CDW) method is used to determine total electron-capture cross sections Q=..sigma../sub n/lsigma(nl) for proton and ..cap alpha..-particle projectiles incident on Li/sup +/ in energy ranges of 100< or =E< or =3000 keV and 100< or =E< or =10 000 keV, respectively. A configuration-interaction (CI) wave function is used to describe the Li/sup +/ electrons; for comparison, capture cross sections for H/sup -/ and He are examined. For each system the percentage change in Q, ..delta.. (HF..-->..CI), is given for progression from a Hartree-Fock (HF) to a CI description of the target electrons. The main emphasis in this work is devoted to a rationalization of the trends observed in the ordering of Q for these three targets. This was achieved by an analysis of the CDW expression for an individual capture cross section sigma(nl, n'l'), where nl and n'l' are the states of the ''active'' (captured) and ''passive'' electrons, respectively.

• Research Organization: Department of Physics, University of Leicester, Leicester, England
• OSTI ID: 5362611
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 21:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALPHA PARTICLES
ATOMIC IONS
CAPTURE
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON CAPTURE
ENERGY RANGE
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ION COLLISIONS
IONS
KEV RANGE
KEV RANGE 100-1000
LITHIUM IONS
MEV RANGE
MEV RANGE 01-10
TOTAL CROSS SECTIONS