Abstract
Within the framework of the concept of a spin temperature in a steady-state regime, the interaction with a resonance medium of two superhigh-frequency fields, one of which is saturating and the other of which is trial, is considered theoretically in the general case without using a high-temperature approximation. The case where the absorption of a resonance medium vanishes at the trial-field frequency is investigated in detail. This occurs with an intensity of the saturating field lower than in the case of a high-temperature approximation. This intensity is estimated in the second and third orders by the parameter ω0βz/2, where ω0 is the resonance frequency of the transition, βz=ħ/(kTz), Tz is the Zeeman-subsystem temperature, ħ is the Planck constant, and k is the Boltzmann constant. It is shown that the cooling of the dipole-dipole reservoir is more considerable than in the case of a high-temperature approximation.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 67, No. 4, pp. 492–495, July–August, 2000.
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Dubovets, V.G., Ugolev, I.I. Interaction of two superhigh-frequency fields with the resonance system of electron spins. J Appl Spectrosc 67, 676–681 (2000). https://doi.org/10.1007/BF02681303
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DOI: https://doi.org/10.1007/BF02681303