Nuclear Quadrupole Absorption in Indium Metal

Abstract

The nuclear quadrupole resonance spectrum of indium metal has been observed and studied over the temperature range 4°K to 225°K. The four transition frequencies occur in ratios of 1:2:3:4, as expected from the crystal structure of indium. The lowest transition at 1.881 Mc (at 4.2°K) gives a quadrupole coupling constant of (45.19±0.02) Mc.