An Interdisciplinary Journal

2010, Vol.13, No.4, pp.409-415

On the Circular Polarization of Radiation of Positrons Moving in Channeling Conditions in Bent Crystal at Small Angles with Respect to Atomic Strings.

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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