Anomalous passage of ultrarelativistic electrons in thick single crystals in axial channeling

Abstract The dynamics of ultrarelativistic axially channeled electrons in thick crystals is studied. It is revealed that a certain fraction of initial electrons have anomalously large dechanneling depths. It is shown also that the dechanneling depth in heavy and light crystals are comparable. In some cases, the number of channeled electrons can strongly increase at the expence of quasi-channeled electrons. The problem of quasichanneling is also considered.

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