Circular polarization of bremsstrahlung from high energy electrons with arbitrary polarization
In view of the recently discovered possibilities of producing polarized electrons in parity-violating weak interactions --- BETA decay and mu -meson decay --- circular polarization of bremsstrahlung becomes of interest as a means for detecting the polarization. The bremsstrahlung circular polarization is found to be sensitive to transverse polarization; thus at high energies, E1 >> mc2, where Coulomb scattering is no longer feasible, it offers another possibility for detecting transverse electron spins. The Born approximation differential cross section was derived, and a summation over flnal electron spins and integration over final electron momenta were performed, with a result feasible for experimental application. The following general results were found: (1) bremsstrahlung is both linearly and circularly polarized; (2) the linear polarization is independent of any polarization of the initial electron; (3) circular pelarization occurs only for polarized initial electrons, (4) if this circular polarization is not observed, the radiation has the same angular distribution and spectrum as that from unpolarized electrons.
- Research Organization:
- CERN, Geneva
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-12-011556
- OSTI ID:
- 4315704
- Journal Information:
- Nuovo Cimento, Journal Name: Nuovo Cimento Journal Issue: 1 Vol. 8; ISSN 0029-6341
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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