Theory of modulation effects in resonant-nuclear-disorientation experiments. III

Abstract

Earlier calculations of the effects of a resonant, frequency-modulated, rf field and spin-lattice relaxation on the emission of radiations from thermally oriented radioactive nuclei are extended. A purely magnetic interaction is assumed for the nuclei. Simple formulas, applicable for any nuclear spin, are derived for the effects of fast modulation on the nuclear-orientation parameters ${B}_{\ensuremath{\nu}}$. Also an analytic expression is derived for static nuclear orientation in a magnetic field at high temperatures.