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Nuclear spin dynamics in the presence of electronic relaxation
Author(s) -
Bosse J.,
Gabriel H.,
Vollmann W.
Publication year - 1975
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220680106
Subject(s) - relaxation (psychology) , operator (biology) , expression (computer science) , symmetry (geometry) , representation (politics) , dynamics (music) , statistical physics , spin–spin relaxation , dipole , spin (aerodynamics) , nuclear magnetic resonance , condensed matter physics , physics , quantum mechanics , chemistry , spin–lattice relaxation , computer science , mathematics , thermodynamics , paramagnetism , psychology , social psychology , repressor , law , acoustics , biochemistry , geometry , political science , transcription factor , programming language , politics , gene
Redfield's relaxation theory, which essentially includes all treatments published so far. has been expressed in a form which is independent of the explicit representation. The relaxation operator is given as an expression sufficiently general to deal with various types of experiments sensitive to the dynamical behaviour of a small subsystem coupled to its environment. e.g. NMR, PAD, ME. Special attention has been paid to the treatment, of a spin system of cylindrical symmetry which relaxes via magnetic dipole interaction with the surroundings. The fast and slow relaxation regime as well as the transition between them is considered. As an application the Mössbauer relaxation spectra of FeNH 4 (SO 4 ) 2 ·12H 2 O are discussed.