Motivation for new H{sup {minus}} double photodetachment threshold studies at LAMPF
- and others
The results of spin-asymmetry studies carried out for electron impact ionization of hydrogen revealed significant deviations from the prediction of the Wannier threshold law for double escape. Detailed statistical analyses of four other previously published threshold studies, all of which had originally claimed consistency with the Wannier law, now provide additional evidence for difficulties with the conventional theory. In contrast to the corollary of the ergodic hypothesis that only the asymptotic form of the wave function need be considered for threshold escape, it appears that three-body dynamics must actually be taken into account if the problem is to be described properly. As earlier investigations at LAMPF have shown, double photodetachment of the negative hydrogen ion provides an excellent method for investigating the threshold behavior of two-electron escape. The application of new laser technolgies, combined with substantial improvements in LAMPF operation achieved in recent years, should significantly enhance the accuracy with which such measurement can be made.
- OSTI ID:
- 127894
- Report Number(s):
- CONF-920376--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 37; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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