Spontaneous and stimulated undulator radiation by an ultra-relativistic positron channeling in a periodically bent crystal

We discuss the radiation generated by positrons channeling in a crystalline undulator. The undulator is produced by periodically bending a single crystal with an amplitude much larger than the interplanar spacing. Different approaches for bending the crystal are described and the restrictions on the...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 475; no. 1; pp. 441 - 444
Main Authors Krause, W., Korol, A.V., Solov'yov, A.V., Greiner, W.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 21.12.2001
Subjects
Channeling positrons
Periodically bent crystal
Undulator radiation
41.60
Undulator radiation
Periodically bent crystal
Channeling positrons
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Summary:We discuss the radiation generated by positrons channeling in a crystalline undulator. The undulator is produced by periodically bending a single crystal with an amplitude much larger than the interplanar spacing. Different approaches for bending the crystal are described and the restrictions on the parameters of the bending are discussed. We also present numeric calculations of the spontaneous emitted radiation and estimate the conditions for stimulated emission. Our investigations show that the proposed mechanism could be an interesting source for high energy photons and is worth to be studied experimentally.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(01)01632-1