Transmission of Neutrons by a Single Crystal of Bismuth Germanate

• Published in: Physics of atomic nuclei Vol. 86; no. 8; pp. 1749 - 1756
• Main Authors: Parshin, P. P., Borisova, P. A., Glazkov, V. P., Dyuzheva-Maltseva, E. V., Em, V. T.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-12-2023; Springer Nature B.V
• Subjects: BGO (crystal); Inelastic scattering; Neutron scattering; Neutrons; Nuclear cross sections; Particle and Nuclear Physics; Physics; Physics and Astronomy; Single crystals; Temperature dependence; bismuth germanate single crystal; partial thermal vibration spectra of atoms; cross section of inelastic neutron scattering; neutron transmission
• ISSN: 1063-7788; 1562-692X
• DOI: 10.1134/S1063778823080124

The effect of inelastic scattering on the transmission of neutrons by a single crystal of Bi
4
Ge
3
O
12
(BGO) has been investigated experimentally and theoretically. The results of an experiment on measuring the temperature dependence of the transmission of monochromatic neutrons by a BGO single crystal are presented. The dependence obtained in the experiment is well described by a calculation based on consideration of inelastic neutron scattering at phonons. The analysis indicates the existence of a temperature-independent contribution to the total cross section of neutron interaction with a BGO single crystal. It is assumed that this contribution is due to the presence of a small amount of impurities that strongly absorb neutrons in the studied specimen.