Fine-structure effects on resonant transfer excitation cross sections for Li-like-ion collisions with H sub 2 and He

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.3579· OSTI ID:5336810

Badnell, N R ^[1]

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1. Atomic Weapons Establishment, Aldermaston, Reading, RG74PR, United Kingdom (GB)

We have calculated configuration-mixing {ital LS}-coupling and intermediate-coupling cross sections for the process of resonant transfer excitation followed by x-ray stabilization in collisions of the Li-like ions S{sup 13+}, Ca{sup 17+}, Ti{sup 19+}, V{sup 20+}, Ni{sup 25+}, and Ge{sup 29+} with H{sub 2} and He. Fine-structure interactions preferentially enhance the {ital KLL} peak (by up to 35% for S{sup 13+}) over the {ital KLn} ({ital n}{gt}{ital L}) peak (+5%), and this largely resolves the discrepancy that exists between theoretical {ital LS}-coupling calculations and experiment over the relative height of the two peaks for the case of Ca{sup 17+}+H{sub 2}.

• OSTI ID: 5336810
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:7; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMS
CALCIUM IONS
CHARGED PARTICLES
COLLISIONS
CONFIGURATION MIXING
COUPLING
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITATION
FINE STRUCTURE
FLUIDS
GASES
GERMANIUM IONS
HELIUM
HYDROGEN
IMPULSE APPROXIMATION
INTERACTIONS
INTERMEDIATE COUPLING
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONIZING RADIATIONS
IONS
ISOELECTRONIC ATOMS
L-S COUPLING
MOLECULE COLLISIONS
MULTICHARGED IONS
NICKEL IONS
NONMETALS
RADIATIONS
RARE GASES
STABILIZATION
SULFUR IONS
VANADIUM IONS
X RADIATION