CROSS-RELAXATION IN SPIN SYSTEMS. Technical Report No. 285
Technical Report
·
OSTI ID:4188510
The energy transfer between adjacent resonances in nuclear and electron spin systems is analyzed in terms of the overlap of line-shappe functions. The procedure is an enlargement of the original proposal of Kronig and Bouwkamp and consists of taking partial account of off-diagonal elements in the spin-spin interaction, which are omitted in Van Vleck' s truncated Hamiltonian. If the frequency of these off-diagoral elements is sufficiently small, they give rise to an additional kind of spin-spin relaxation, observed by Gorter, et al. These off- diagonal elements are also resonsible for cross-sataration effects in paramagnetic slats of the type observed by Townes, et al. An experiment on cross- saturation effects in paramagnetic salts by Giordmaine, et al., is described by spin-spin interactions, but not by the assumption of a hot phonon region as proposed by Gant. Implications of the cross-relaxation for the operation of solid state masers are discussed. (auth)
- Research Organization:
- Harvard Univ., Cambridge, Mass. Cruft Lab.
- NSA Number:
- NSA-14-008804
- OSTI ID:
- 4188510
- Report Number(s):
- AD-207205
- Country of Publication:
- United States
- Language:
- English
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