L-vacancy production in near-symmetric heavy-ion collisions (Z > or approx. = 35)

Journal Article · Sun Jul 01 04:00:00 EDT 1979 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.20.154· OSTI ID:6248180

Meyerhof, W E; Rueetschi, A; Stoller, C; Stoeckli, M; Woelfli, W

The authors have measured the projectile and target L x-ray spectra and cross sections for 41-MeV Ta projectiles bombarding thin targets between Ag and Th and for 17--60-MeV collisions of Ho on Ho, Au on Au, Pb on Pb, and U on Th. These cross sections, as well as those measured elsewhere, are examined in terms of a simple vacancy-sharing model involving the 4fsigma and 3dsigma molecular orbitals (MO). From the L..beta../sub 1//L..cap alpha.. x-ray intensity ratios it is found that in symmetric collisions the 4fsigma MO correlates to the 2p/sub 3/2/ level of the collision partners (correlation rule of Barat and Lichten). As the asymmetry of the collision system increases, there is an increasing tendency for the 4fsigma MO to correlate to the 2s level of the lower-Z collision partner (correlation rule of Eichler and collaborators). The physical basis for the shift of the 4fsigma MO correlation is discussed.

• Research Organization: Department of Physics, Stanford University, California 94305
• OSTI ID: 6248180
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 20:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ACTINIDES
ATOM COLLISIONS
ATOMIC IONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
GOLD
GOLD IONS
HOLMIUM
HOLMIUM IONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
L SHELL
LEAD
LEAD IONS
METALS
MEV RANGE
MEV RANGE 10-100
RARE EARTHS
SILVER
SPECTRA
TANTALUM IONS
THORIUM
TRANSITION ELEMENTS
URANIUM IONS
X-RAY SPECTRA