Publication: Neutron physics investigations of fundamental processes of statistical mechanics
Дата
2022
Авторы
Dzheparov, F. S.
Gulko, A. D.
Elyutin, N. O.
Lvov, D. V.
Shestopal, V. E.
Journal Title
Journal ISSN
Volume Title
Издатель
Аннотация
Studies in spin dynamics of disordered media and multiple ultra-small angle neutron scattering are considered. The experiments were carried out on unique installations designed in ITEP laboratory of neutron physics: beta-NMR spectrometer and universal neutron diffractometer. The main attention is paid to random walks in disordered systems and ultra-small angle neutron scattering (USANS) on objects with space correlations in positions of scatterers. Synthesis of concentration expansion, semi-phenomenological theory and numerical simulations produced satisfactory description of the nuclear polarization transfer within disordered 8Li-6Li spin subsystem in LiF single crystal. The theory of USANS starts from eikonal approximation for the scattering amplitude, which (a) reproduces the phenomenological Moliere-Bethe theory for the observable neutron angular distributions for uncorrelated random positions of scatterers, and (b) gives a possibility to take into account their spatial correlations. © 2022 World Scientific Publishing Company.
Описание
Ключевые слова
Цитирование
Neutron physics investigations of fundamental processes of statistical mechanics / Dzheparov, F.S. [et al.] // International Journal of Modern Physics A. - 2022. - 10.1142/S0217751X22430084
URI
https://www.doi.org/10.1142/S0217751X22430084
https://www.scopus.com/record/display.uri?eid=2-s2.0-85136702297&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000849386400001
https://openrepository.mephi.ru/handle/123456789/27368
https://www.scopus.com/record/display.uri?eid=2-s2.0-85136702297&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000849386400001
https://openrepository.mephi.ru/handle/123456789/27368