Ionization of the 3dsigma molecular orbital in heavy-ion collisions

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.18.414· OSTI ID:7049280

Meyerhof, W E

As suggested previously, in a heavy-ion collision the sum of the total L-vacancy-production cross section of the higher-Z partner and of the K-vacancy-production cross section of the lower-Z partner, close to K-L level-matching conditions, represents the vacancy-formation cross section in the 3dsigma molecular orbital. It is found empirically that at a given projectile velocity v/sub 1/ the 3dsigma cross section depends mainly on the united-atom Z, independent of the projectile Z (Z/sub 1/), between Z/sub 1/ = 28 and 53. A united-atom ionization model of Briggs is evaluated in the semiclassical approximation. The results provide an upper-limit estimate for the 3dsigma cross section, which reproduces quantitatively its empirical v/sub 1/ and Z dependence and its order of magnitude. The results do not imply, though, that other vacancy-production mechanisms may not be as or more important than ionization.

• Research Organization: Department of Physics, Stanford University, Stanford, California 94305
• OSTI ID: 7049280
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 18:2; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRONIC STRUCTURE
HEAVY IONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
K SHELL
L SHELL