Title :
Photodetachment Cross Sections for He-(4P°)
Author :
Compton, R.N. ; Alton, G.D. ; Pegg, D.J.
Author_Institution :
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
fDate :
4/1/1981 12:00:00 AM
Abstract :
We report the first measurements of photodetachment cross sections for He- (formed through charge exchange of He+ with Ca vapor) over the photon energy range from 1.77 to 2.75 eV. The energies of auto-detached electrons from the metastable He beam have also been determined for the first time. The autodetached electron energy agrees within experimental error (±0.25 eV) with the known 1s2s2p)4P° He- energy level. This taken with measurements for the lifetime of He- infers that change exchange of He+ with Ca vapor produces 4P° He-.
Keywords :
Charge measurement; Current measurement; Electron beams; Energy measurement; Energy states; Helium; Laboratories; Mass spectroscopy; Metastasis; Physics;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1981.4331378
