Resonance Interference and Absolute Cross Sections in Near-Threshold Electron-Impact Excitation of Multicharged Ions
Conference
·
OSTI ID:629309
- Oak Ridge National Lab., TN (United States)
- National Inst. of Standards and Technology (JILA), Boulder, CO (United States)
- University College London, (United Kingdom)
Strong resonance features were observed in near-threshold excitation of {sup 1}S right arrow {sup 3}P intercombination transitions in Si(2+), Ar(6+), and Kr(6+). Such resonances are predicted to dominate over direct excitation by more than an order of magnitude in the threshold region. Absolute cross sections were measured by using the merged electron-ion beams energy loss technique. The results are compared with R-matrix close-coupling (CCR) theory for all of the ions. Several discrepancies in resonance positions and magnitudes exist between experiment and theory for these spin forbidden transitions.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464; AI05-86ER53237
- OSTI ID:
- 629309
- Report Number(s):
- ORNL/CP--94782; CONF-970710--; ON: DE97008899; BR: AT5010803
- Country of Publication:
- United States
- Language:
- English
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