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THE RESONANCE SCATTERING OF $gamma$-QUANTA BY NUCLEI PRESENT IN A SOLID (in Russian)

Journal Article · · Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz.
OSTI ID:4842445
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Both resonance and also Rayleigh scattering are observed at low temperatures (for example, for tin at 90 deg K), although the resonance scattering is a number of times greater than the Rayleigh scattering. Thus, not only the resonance emission and absorption (the Mossbauer effect), but also the resonance and Rayleigh scattering of gamma -quanta can be used in studying a solid. The character of the resonance scattering is examined mathematically, and the angalar distribution of the scattered gamma -quanta, the excitation spectrum and the spectrum of the scattered gamma -quanta are determined. It is pointed out that it is possible to measure the frequency of the normal oscillations of a scatterer both from the spectrum of the scattered gamma -quanta, and also from the intensity of the Mossbauer line. lt is shown that the Mossbauer line can occur at angles other than the Bragg angles. In determining the probability of resonance scattering, the general case is considered where there are a number of resonance scattering nuclei in the elementary cell of the scatterer. Summing over the intermediate and final states, and also averaging over the initial states of the lattice are carried out without making any approximations. (TTT)

Research Organization:
Inst. of Physics, Academy of Sciences, USSR
NSA Number:
NSA-15-029779
OSTI ID:
4842445
Journal Information:
Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz., Journal Name: Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz. Vol. Vol: 25
Country of Publication:
Country unknown/Code not available
Language:
Russian

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Related Subjects

ABSORPTION
ANGULAR DISTRIBUTION
BRAGG REFLECTION
EMISSION
EXCITATION
FREQUENCY
GAMMA RADIATION
IMPURITIES
LATTICES
LOW TEMPERATURE
MATHEMATICS
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MOESSBAUER EFFECT
NUCLEI
OSCILLATIONS
QUANTUM MECHANICS
RAYLEIGH SCATTERING
REFLECTION
RESONANCE
SCATTERING
SOLIDS
SPECTRA
TIN