Resonant behavior in the projectile K x-ray yield associated with electron capture in ion-atom collisions

Conference · Fri Jan 01 04:00:00 EST 1982 · AIP Conf. Proc.; (United States)

OSTI ID:5732097

Tanis, J A; Bernstein, E M; Graham, W G; Clark, M; Shafroth, S M; Johnson, B M; Jones, K; Meron, M

A review of recent effects to observe simultaneous electron capture-and-K-shell excitation in ion-atom collisions is presented. This process is qualitatively analogous to dielectronic recombination (inverse Auger transition) in free-electron-ion collisions, and, hence, is expected to be resonant. Experimentally, events having the correct signature for simultaneous capture-and-excitation are isolated by detecting projectile K x rays in coincidence with ions which capture a single electron. In a recent experiment involving 70-160 MeV S/sup 13 +/ ions incident on Ar, resonant behavior was observed in the yield of projectile K x rays associated with electron capture. This resonance is attributed to simultaneous capture-and-excitation. The position (120 MeV) and width (60 MeV) of the observed resonance are in good agreement with theoretical calculations. The data indicate that this resonant process is an important mechanism in inner-shell vacancy production in the energy range studied. 11 references, 4 figures, 1 table.

• Research Organization: Western Michigan Univ., Kalamazoo
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5732097
• Report Number(s): CONF-820855-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 94
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZING RADIATIONS
IONS
K SHELL
NONMETALS
NUMERICAL DATA
RADIATIONS
RARE GASES
RESONANCE
REVIEWS
SULFUR IONS
X RADIATION