Radiative electron capture studied in relativistic heavy-ion--atom collisions

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.51.2098· OSTI ID:6544638

Stoehlker, T; Kozhuharov, C; Mokler, P H; Warczak, A; Bosch, F; Geissel, H; Moshammer, R; Scheidenberger, C ^[1]; Eichler, J ^[2]; Ichihara, A; Shirai, T ^[3]; Stachura, Z ^[4]; Rymuza, P ^[5]

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1. Gesellschaft fuer Schwerionenforschung, 64220 Darmstadt (Germany)
2. Bereich Theoretische Physik, Hahn-Meitner-Institut, 14109 Berlin (Germany) Fachbereich Physik, Freie Universitaet Berlin, 14195 Berlin (Germany)
3. Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11 (Japan)
4. Instytut Fizyki Jadrowej, 31-342 Krakow (Poland)
5. Instytut Badan Jadrowych, 05-400 Swierk (Poland)

The process of radiative electron capture (REC) in relativistic collisions of high-[ital Z] ions with low-[ital Z] gaseous and solid targets is studied experimentally and theoretically. The observed x-ray spectra are analyzed with respect to photon angular distributions as well as to total [ital K]-REC cross sections. The experimental results for angle-differential cross sections are well reproduced by exact relativistic calculations which yield significant deviations from standard sin[sup 2][theta] distributions. Total cross sections for [ital K]-REC are shown to follow a simple scaling rule obtained from exact relativistic calculations as well as from a nonrelativistic dipole approximation. The agreement between these different theoretical approaches must be regarded as fortuitous, but it lends support to the use of the nonrelativistic approach for practical purposes.

• OSTI ID: 6544638
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 51:3; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
665300 -- Interactions Between Beams & Condensed Matter-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR DISTRIBUTION
ATOM COLLISIONS
BISMUTH IONS
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTRON CAPTURE
ENERGY RANGE
FLUIDS
GASES
GOLD IONS
HEAVY IONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
LEAD IONS
MEV RANGE
MEV RANGE 100-1000
RELATIVISTIC RANGE
SCALING LAWS
SOLIDS
SPECTRA
STORAGE RINGS
TARGETS
URANIUM IONS
X-RAY SPECTRA