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Stationary phase method of calculating Čerenkov radiation spectrum of a charged particle moving in curved path

Li Yi-Ding Zhang Peng-Fei Zhang Hui Yu Miao

Stationary phase method of calculating Čerenkov radiation spectrum of a charged particle moving in curved path

Li Yi-Ding, Zhang Peng-Fei, Zhang Hui, Yu Miao
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  • Received Date:  11 October 2012
  • Accepted Date:  10 December 2012
  • Published Online:  05 May 2013

Stationary phase method of calculating Čerenkov radiation spectrum of a charged particle moving in curved path

  • 1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China;
  • 2. CAS Key Laboratory of Basic Plasma Physics, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
Fund Project:  Project supported by the National Basic Research Program of China (Grant No. 2001CCB01000), and the ITER-China Program (Grant No. 2010GB107001).

Abstract: Based on the general expression for spectral-angular distribution of the radiation emitted by a charged particle moving in exterior medium, the essential role of stationary phase points in Čerenkov effect is investigated. And the stationary phase method of calculating spectral-angular distribution of Čerenkov radiation from a charged particle moving in curved path is proposed. By the stationary phase method, the asymptotic form of spectral-angular distribution of synchrotron-Čerenkov radiation is calculated, and the result indicates that the spectrum of synchrotron-Čerenkov radiation near critical angle c is quite different from that near the plane of particle's orbit.

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