Conversion of Relativistic Electron Energy into One Photon when Interacting with Crystal .

Sep 17, 2019, 12:10 PM
Oral General radiation properties from relativistic particles General Properties of Radiation from Relativistic Particles


Prof. Nikolay Kalashnikov (NRNU MEPhI)


N.P. Kalashnikov (, А.S. Olchak (
National Nuclear Research University «MEPhI» (Moscow Engineering Physics Institute)
115409 Moscow, Kashirskoe shosse, 31, Russia
Interaction of relativistic electrons with crystal axis or plane is traditionally described in channeling model as a motion in some even, homogeneous averaged potential. However, real crystal axis or plane consists of individual atoms, positioned periodically. Interaction with periodical heterogeneities must be accompanied with quantum transition of discrete portions of momentum Δp|| = 2πnћ/d, n = 1,2,3,…, defined by the period of heterogeneities d. In axial case d is equal to the period of crystal lattice along this axis. Transmission of sufficient quantum portion of momentum to the lattice can be accompanied by the emission of photon with correspondingly high energy ћω ~ 4πћ E12/ dm2c3. In case of energies E ~ GeV or more, up to ~90% of electron’s energy may be converted into just one photon in this process.

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Prof. Nikolay Kalashnikov (NRNU MEPhI)

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