A General Theory of Magnetic Double Resonance

概要

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By using a similar method as was used in the preceding paper, it is proposed to present a general theory for describing a system which consists of two interacting different species of spin, one of them being saturated by a strong resonant radiation field and the other being detected by a weak resonant radiation field. Two rather different extreme cases are classified according to the relative magnitude of the static strength of the mutual interaction σ_0 and the characteristic frequency of fluctuation φ_0 of the relevant environment. A)When the fluctuation of the environment dominates(φ_0≫σ_0), then we are led to the situation which may be called a generalized"Overhauser effect", i.e.the process of saturation works as an energy pumping. Without the effect of the continuous saturation the simultaneous equation reduces to a generallized Solomon equation originally proposed for describing the coupled free induction of two kinds of nuclear spin system. B)If, on the other hand, the static strength of the mutual interaction dominates over the fluctuation(σ_0≫φ_0), then there results a phenomenon called"Saturational narrowing", i.e.the process of saturation works as a local field modulation. This latter case has also been illustrated by an application to the double resonance experiment on thallous fluoride crystal.
理論物理学刊行会の論文
1958-11-25