Strong Alignment Observed for the Time-Reversed Photoionization Process Studied in Relativistic Collisions with Bare Uranium Ions
- Institut fuer Kernphysik, University of Frankfurt, 60486 Frankfurt (Germany)
- Gesellschaft fuer Schwerionenforschung, 64220 Darmstadt (Germany)
- Fachbereich Physik, Freie Universitaet Berlin, 14195 Berlin (Germany)
- Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319-11 (Japan)
- Physics Divison, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Institute for Nuclear Studies, 05-400 Swierk (Poland)
- Institute of Nuclear Physics, 31-342 Cracow (Poland)
- Institute of Physics, Jagiellonian University, 30-059 Cracow, Poland; Wayne State University, Detroit, Michigan 48202 (United States)
In high-energy atomic collisions between bare high-Z projectiles and low-Z target atoms, an electron may be captured radiatively into an excited projectile state which subsequently decays by x-ray emission. This process is the inverse of two-photon{endash}one-electron ionization, in which the first photon resonantly excites an electron from the hydrogenic 1s{sub 1/2} ground state and a second photon ionizes the excited electron. We present an experimental and theoretical study of the angular distribution of the Ly-{alpha}{sub 1} (2p{sub 3/2}{r_arrow}1s{sub 1/2} ) x rays following radiative electron capture. From the observed anisotropic emission pattern a significant alignment of the intermediate 2p{sub 3/2} state is deduced. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 543871
- Journal Information:
- Physical Review Letters, Vol. 79, Issue 17; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
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