Impact-parameter dependence of K-vacancy production in chlorine-argon collisions

Journal Article · Wed Dec 01 04:00:00 EST 1976 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.14.2026· OSTI ID:7245198

Cocke, C L; Randall, R R; Varghese, S L; Curnutte, B

We have measured the probability per collision for the production of Cl and Ar K vacancies in the bombardment of argon gas targets by 15- and 30-MeV chlorine projectiles. By detecting the Cl and Ar K x rays in coincidence with Cl ions scattered to a known angle we have deduced the dependence of the probability on impact parameter b. The sum of Ar and Cl K-vacancy production probabilities, presumably a measure of 2psigma vacancy production, is found to depend in magnitude on the charge state of the Cl projectile, but the shape of the summed probability curve, when plotted versus b, is not charge-state dependent. The measured shape is close to that expected for K-vacancy production via 2psigma-2p..pi.. rotational coupling. The data suggest that, for these collisions, the production of 2p..pi.. vacancies at large internuclear distances is important and that a two-step mechanism for the production of the K vacancies is operating. (AIP)

• Research Organization: Kansas State University, Manhattan, Kansas 66506
• OSTI ID: 7245198
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 14:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
CHLORINE
COLLISIONS
ELEMENTS
ENERGY RANGE
HALOGENS
IMPACT PARAMETER
IONIZATION
MEV RANGE
MEV RANGE 10-100
NONMETALS
RARE GASES
SPECTRA
X-RAY SPECTRA