TY  - JOUR
A1  - Klenner, J.
A1  - Augustin, Jürgen
A1  - Schäfer, Andreas
A1  - Greiner, Walter
T1  - Photon-photon interaction in axial channeling
N2  - We investigate the possibility that high-energy photons are channeled, when passing through an oriented single crystal, due to Delbrück scattering. For this purpose the exact electron propagator for the single-string model is constructed. Starting from a separation of variables, we solve the Dirac equation for a cylindrical electrostatic potential. The propagator for such external fields is constructed from solutions of the radial Dirac equation. This propagator is applied to a calculation of the S matrix for Delbrück scattering. We specify the conditions under which photon channeling takes place. Unfortunately these conditions are only matched for a very small fraction of those photons being produced by channeled electrons.
Y1  - 1994
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2405
UR  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30-29944
ER  -