Title :
He- Photodetachment: Effects of the 1s2p2p´4Pe Resonance
Author :
Peterson, J.R. ; Coggiola, M.J. ; Bae, Y.K.
Author_Institution :
SRI International Menlo Park, CA 94025
fDate :
4/1/1983 12:00:00 AM
Abstract :
He- exists in a metastable state, (1s2s2p)4Po, lying 19.74 eV above He(l 1S), with substate lifetimes of 10-500 ¿s. Following a preliminary survey of the photodetachment cross section over a range of energies, we have concentrated on a large shape resonance associated with the first excited state of He-, 1s2p2p´ 4pe which recent calculations have found to lie just above He(23P). The resonance has a profound effect on the overall photodetachment spectrum.
Keywords :
Electromagnetic scattering; Electrons; Energy measurement; Extraterrestrial measurements; Helium; Ion sources; Laser beams; Metastasis; Particle scattering; Resonance;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1983.4332447
