dorsal/arxiv
View SchemaTotal spectrum of photon emission by an ultra-relativistic positron channeling in a periodically bent crystal
| Authors | W. Krause, A. V. Korol, A. V. Solov'yov, W. Greiner |
|---|---|
| Categories | |
| ArXiv ID | physics/0109045 |
| URL | https://arxiv.org/abs/physics/0109045 |
| DOI | 10.1088/0954-3899/26/6/103 |
| Journal | J.Phys. G26 (2000) L87-L95 |
Abstract
We present the results of numerical calculations of the channelling and undulator radiation generated by an ultra-relativistic positron channelling along a crystal plane, which is periodically bent. The bending might be due either to the propagation of a transverse acoustic wave through the crystal, or due to the static strain as it occurs in superlattices. The periodically bent crystal serves as an undulator. We investigate the dependence of the intensities of both the ordinary channelling and the undulator radiations on the parameters of the periodically bent channel with simultaneous account for the dechannelling effect of the positrons. We demonstrate that there is a range of parameters in which the undulator radiation dominates over the channelling one and the characteristic frequencies of both types of radiation are well separated. This result is important, because the undulator radiation can be used to create a tunable source of X-ray and gamma-radiation.
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"abstract": "We present the results of numerical calculations of the channelling and\nundulator radiation generated by an ultra-relativistic positron channelling\nalong a crystal plane, which is periodically bent. The bending might be due\neither to the propagation of a transverse acoustic wave through the crystal, or\ndue to the static strain as it occurs in superlattices. The periodically bent\ncrystal serves as an undulator. We investigate the dependence of the\nintensities of both the ordinary channelling and the undulator radiations on\nthe parameters of the periodically bent channel with simultaneous account for\nthe dechannelling effect of the positrons. We demonstrate that there is a range\nof parameters in which the undulator radiation dominates over the channelling\none and the characteristic frequencies of both types of radiation are well\nseparated. This result is important, because the undulator radiation can be\nused to create a tunable source of X-ray and gamma-radiation.",
"arxiv_id": "physics/0109045",
"authors": [
"W. Krause",
"A. V. Korol",
"A. V. Solov\u0027yov",
"W. Greiner"
],
"categories": [
"physics.acc-ph"
],
"doi": "10.1088/0954-3899/26/6/103",
"journal_ref": "J.Phys. G26 (2000) L87-L95",
"title": "Total spectrum of photon emission by an ultra-relativistic positron channeling in a periodically bent crystal",
"url": "https://arxiv.org/abs/physics/0109045"
},
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