POLARISATION EFFECTS IN ELASTIC SCATTERING OF DIRAC ELECTRONS BY SCREENED COULOMB FIELD
Journal Article
·
· Acta Physica Austriaca (Austria)
OSTI ID:4326688
Polarization dependent cross section for scattering of Dirac electrons by a screened Coulomb field was calculated in the covariant S-matrix formalism. The first contribution to the asymmetry factor a( THETA ) appears only in the second Born approximation of the external field. The effect of screening was found to be small except nt small angle and low energy scattering. Detailed analyses of the results were given for three cases, when the incident beam is (a) unpolarized, (b) longitudinally polarized, and (c) transversely polarized. Applications to double and triple scattering experiments were considered and expressions for the asymmetry ratio sigma were obtained for these cases. Results of recent double scattering experiments with longitudinally polarized electron beam were found to compare favorably with the theoretical results obtained. (auth)
- Research Organization:
- Indian Inst. of Tech., Kharagpur
- NSA Number:
- NSA-12-013289
- OSTI ID:
- 4326688
- Journal Information:
- Acta Physica Austriaca (Austria), Journal Name: Acta Physica Austriaca (Austria) Vol. Vol: 12; ISSN APASA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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