2010, Vol.13, No.4, pp.409-415
It is shown that if high energy positrons are moving in planar
channeling conditions in a bent crystal at a small angle with
respect to atomic strings which form the bent channeling planes,
the hard part of the spectrum of gamma radiation emitted by the
positrons will be highly circularly polarized. This type of
radiation can be considered as a circularly polarized coherent
bremsstrahlung manifesting themselves efficiently at the positron
energies of about one GeV and above.
Key words:
channeling, gamma-radiation, coherent bremsstrahlung,
circular polarization, positron
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