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First results of investigation of radiation from positrons in a crystalline undulator |
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| Authors: | V. T. Baranov S. Bellucci V. M. Biryukov G. I. Britvich C. Balasubramanian V. Guidi G. Giannini V. N. Zapolsky V. I. Kotov A. E. Kushnirenko V. A. Maisheev G. Martinelli E. Milan V. A. Pikalov V. I. Terekhov U. Uggerhoj V. N. Chepegin Yu. A. Chesnokov |
| Affiliation: | (1) Institute for High Energy Physics, Protvino, Moscow region, 142281, Russia;(2) INFN—Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati, Italy;(3) Department of Physics and INFN, Via Paradiso 12, I-44100 Ferrara, Italy;(4) Aarhus University, 8000 Aarhus C., Denmark |
| Abstract: | Radiation emitted by positrons moving in a periodically deformed crystal has been experimentally observed for the first time. Radiation spectra have been measured in a wide energy range. Experimental evidence has been obtained for an undulator peak in a radiation spectrum, which is qualitatively consistent with calculations. Crystalline undulators ensure an equivalent magnetic field of 1000 T and a period in the submillimeter range and can therefore be used to generate x-ray and gamma radiation that is a hundred times harder than radiation in usual undulators. |
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