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The Interaction of Microwave Phonons with Irradiation Centres in Quartz
Author(s) -
Lewis M. F.,
Rosenberg H. M.,
Wigmore J. K.
Publication year - 1966
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.19660150131
Subject(s) - electron paramagnetic resonance , microwave , quartz , condensed matter physics , irradiation , phonon , saturation (graph theory) , microwave power , nuclear magnetic resonance , paramagnetism , materials science , relaxation (psychology) , physics , nuclear physics , psychology , social psychology , mathematics , quantum mechanics , combinatorics , composite material
Abstract The electron spin resonance spectrum of the paramagnetic centres produced by the X‐irradiation of quartz has been investigated at 1.8 °K at 10 GHz from well below to above the microwave saturation region. Hypersonics at 10 GHz were then introduced and this reduced the resonance signal. The effect has been studied as a function of hypersonic power and frequency, microwave monitoring power and magnetic field orientation. The experimental results suggest that the spin‐lattice relaxation time is of the order of 6 s at 1.8 °K and is determined by cross relaxation processes.