[ital L]-Subshell Resolved Photon Angular Distribution of Radiative Electron Capture into He-like Uranium

Journal Article · Mon Dec 26 04:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.3520· OSTI ID:6865757

Stoehlker, T; Geissel, H; Irnich, H; Kandler, T; Kozhuharov, C; Mokler, P H; Muenzenberg, G; Nickel, F; Scheidenberger, C; Suzuki, T; Kucharski, M; Warczak, A; Rymuza, P; Stachura, Z; Kriessbach, A; Dauvergne, D; Dunford, B; Eichler, J; Ichihara, A; Shirai, T ^[1]

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1. Gesellschaft fuer Schwerionenforschung (GSI); Planckstr. 1; 64291 Darmstadt (Germany) Jagiellonian University; Institute of Physics; 30-059 Cracow (Poland) Institute for Nuclear Studies; 05-400 Swierk (Poland) Institute of Nuclear Physics; 31-342 Cracow (Poland) Institut fuer Kernphysik der Universitaet Frankfurt; 60486 Frankfurt (Germany) Institut de Physique Nucleaire; Universite Lyon I; 69622 Villeurbanne Cedex (France) Physics Division; Argonne National Laboratory; Argonne; Illinois 60439 (United States) Bereich Theoretische Physik; Hahn-Meitner-Institut Berlin; 14109 Berlin (Germany) Japan Atomic Energy Research Institute; Tokai-mura; Ibaraki 319-11 (Japan)

The photon angular distributions for radiative electron capture (REC) into the [ital j]=1/2 and [ital j]=3/2 [ital L] subshell levels were measured and calculated for U[sup 90+][r arrow]C collisions at 89 MeV/u. The experiment provides the first study of the photon angular distribution of REC into a projectile [ital p] state ( [ital j]=3/2) which was found to exhibit a slight backward peaking in the laboratory frame. For radiative capture to the [ital j]=1/2 states, the measured angular distribution deviates considerably from symmetry around 90[degree]. The results demonstrate that the usual sin[sup 2][theta][sub lab] distribution is not valid in the high-[ital Z] regime.

• OSTI ID: 6865757
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:26; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
BOSONS
BOUND STATE
CAPTURE
CHARGE STATES
CHARGED PARTICLES
COINCIDENCE METHODS
COUNTING TECHNIQUES
DATA
DISTRIBUTION
ELECTRON CAPTURE
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
IONS
MASSLESS PARTICLES
NUMERICAL DATA
PHOTONS
PROJECTILES
SPECTRA
SYMMETRY
URANIUM IONS
X-RAY SPECTRA