Simulation of channeling and radiation of 855 MeV electrons and positrons in a small-amplitude short -period bent crystal

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:387

Article

Korol, Andrei V.¹  Bezchastnov, Victor G.^2,3  Sushko, Gennady B.¹  Solov'yov, Andrey V.¹ 

[1] MBN Res Ctr, Altenhoferallee 3, D-60438 Frankfurt, Germany

[2] AF Ioffe Phys Tech Inst, Politechnicheskaya Str 26, St Petersburg 194021, Russia

[3] Peter Great St Petersburg Polytech Univ, Politechnicheskaya 29, St Petersburg 195251, Russia

关键词: Channeling;    Periodically bent crystal;    De-channeling length;    Radiation spectra;   

DOI  :  10.1016/j.nimb.2016.09.021

来源: Elsevier

【 摘 要 】

Channeling and radiation are studied for the relativistic electrons and positrons passing through a Si crystal periodically bent with a small amplitude and a short period. Comprehensive analysis of the channeling process for various bending amplitudes is presented on the grounds of numerical simulations. The features of the channeling are highlighted and elucidated within an analytically developed continuous potential approximation. The radiation spectra are computed and discussed. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free