Scattering of low energy positrons by helium
Journal Article
·
· J. Phys., B (London), v. 6, no. 11, pp. L305-L308
Kohn's variational method is used to calculate the positronhelium scattering length and low-energy S-wave phase shifts for a quite realistic Hylleraas type of helium function containing an electron-electron correlation term. The zero energy wave function is used to calculate the value of the annihilation rate parameter Z/sub eff/. All the results are significantly different from those for Drachman's helium model B (J. Phys. B. Atom. Molec. Phys.;, 5: L30-L32(1972)), but are in better agreement with the available experimental data. (auth)
- Research Organization:
- Goddard Space Flight Center, Greenbelt, MD
- NSA Number:
- NSA-29-016819
- OSTI ID:
- 4382180
- Journal Information:
- J. Phys., B (London), v. 6, no. 11, pp. L305-L308, Journal Name: J. Phys., B (London), v. 6, no. 11, pp. L305-L308; ISSN JPBAB
- Country of Publication:
- United Kingdom
- Language:
- English
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