Approximants to the nuclear-spin autocorrelation function. Application to CaF2

Abstract

A simple method for generating approximants to the nuclear-spin autocorrelation function from the known moments is described. Expressions for the two lowest-order approximants are derived and the numerical results are compared with the ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}$ experimental free-induction-decay signals in Ca${\mathrm{F}}_2$.