Quadrupole interaction of 181 Ta in Hf compounds

Abstract

Time-differential angular correlation studies of the electric quadrupole interaction of ¹⁸¹Ta in various Hf compounds are presented. Methods for the analysis of the time spectra are discussed. The experiments yield information on the strength of the quadrupole interaction, and on the axial asymmetry and distribution of the field gradient. Electric field gradients V_zz are derived for ¹⁸¹Ta in Hf metal, HfO₂, and (NH₄)₂HfF₆.