EMPIRICAL ANALYSIS OF THE H$sup -$ PHOTODETACHMENT CROSS SECTION
The zero-range photoelectric cross section of Bethe and Peierls, corrected according to effective range theory, is fitted to the H/sup -/ photodetachment cross section. The value of 2.64 a/sub o/ obtained for the effective range agrees with values obtained from the wave-function calculations of Schwartz, Burke and Schey, and others. A more accurate formula for the detachment cross section is obtained by allowing for distortion in the final p state by means of an approximate formula for the phase shift. This formula agrees qualitatively with the close-coupling theory phaseshift results of Burke and Schey, and provides a photodetachment cross section that fits the experimental data slightly better than the results recently obtained by Geltman with an elaborate variational treatment. There are two adjustable parameters: the binding energy, and one parameter in the phase-shift formula. By a slightly different choice of the parameters than is required to fit the experimental data, close agreement can also be obtained with the Geltman results. (auth)
- Research Organization:
- Lockheed Missiles and Space Co., Palo Alto, Calif.
- NSA Number:
- NSA-17-031192
- OSTI ID:
- 4688378
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 131; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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