No abstract

No abstract

IntroductionIn a previous paper [l] we have developed a general theory of Raman scattering of y-quanta by a crystal, under forced vibrations. The Raman scattering amplitude of y-quanta by nuclei and atomic electrons in such a crystal and the corresponding crosssections were calculated3). These questions were partially discussed also in [ 2 , 31. Here we study the multiple scattering of y-quanta by a crystal, performing forced vibrations. The algebraic equations for multiple scattering of X-rays by such a crystal I n Section 2 of the paper we get the system of algebraic equations for multiple scattering of y-quanta by a vibrating crystal. In Section 3 the two-wave solution of these equations is analysed. In Section 4 the effect of suppression of inelastic scattering and reactions is considered for the case of two-wave inelastic diffraction. In Section 5 l) Prospekt Nauki 119, 252028 Kiev, USSR.

A general scattering theory of photons (particles) by field targets, periodically depending on time is developed. On the basis of this formalism the scattering of y-quanta is considered by a crystal, which performs enforced vibrations under the influence of alternating fields. The Raman scattering amplitudes and corresponding cross-sections for scattering and absorption of y-quanta by the crystals are calculated. The possibility of compensation of the recoil energy for y-resonance at energies ~2 0 0 keV by infrared lasers is analysed. P~~B H T~o6ua~1 Teopm paccemxm (POTOHOB (YacTHu) MmmeHmm B nomx, nepllonmecm 3aBMCFIUHX OT BpeMeHH. Ha OCHOBe 3TOr0 @OpMaJIH3Ma PaCCMOTpeHO paCCeHHEIe y-KBaHTOB Kp&iCTaJlJIOM, KOTOPbIg COBeplUaeT BbIHYHCAeHHbIe KOJIe6aHMR nOa AefiCTBHeM IIePeMeHHbIX IIOJIefi. BbIqllCJIeHbI aMnJIIlTyAbI KOM6HHalJBOHHOrO PaCCeSIHllH EI COOTBeT-KOMneH3alJMH C nOMOWbI0 HH#paKpaCHbIX JIa3epOB 3HeprHK OTAaqIl AnFI y-pe30HaHCa npEI cTByrouHe ceqeHm paccemm EI nornoueHm. l l p o a~a n m a p o~a~a B O~M O E C H O C T~ 3~e p r~~x w 200 keV.