K-vacancy production in heavy-ion collisions. II. Multiple- and single-collision excitation in the 2psigma molecular orbital. [12 to 470 MeV range]

Journal Article · Fri Jul 01 04:00:00 EDT 1977 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.16.169· OSTI ID:7300236

Meyerhof, W E; Anholt, R; Saylor, T K

The present paper, one of a four-part series, examines K-vacancy cross sections in collisions of symmetric and near-symmetric systems produced with 12--60-MeV Br, 200--330-MeV Kr, 15--80-MeV I, 326--470-MeV Xe, and 90--110-MeV Pb beams. Cross sections are discussed from the point of view of molecular-orbital formation during the collision. In that model, the summed K-vacancy cross sections of both collision partners represents essentially the total 2psigma vacancy cross section in the outgoing part of the collision. Experimental summed cross sections using solid targets can have appreciable contributions from multiple-collision effects, which are computed in detail. Proposed single-collision mechanisms of 2psigma vacancy formation are also examined, but none can be established with certainty. The sharing of 2psigma vacancies on the outgoing part of the collision between the K shells of two collision partners is found to agree well with a previously derived formula based on the Nikitin-Demkov long-range coupling model.

• Research Organization: Department of Physics, Stanford University, Stanford, California 94305
• OSTI ID: 7300236
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 16:1; 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
ATOMIC BEAMS
ATOMIC IONS
ATOMIC MODELS
BEAMS
BROMINE IONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRONIC STRUCTURE
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
HEAVY IONS
IODINE IONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
K SHELL
KRYPTON IONS
LEAD IONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
MOLECULES
MULTIPLE SCATTERING
SCATTERING
XENON IONS