LASER-INDUCED FLUORESCENCE IN ND3+-LACL3 .1. HYPERFINE STRUCTURES

The laser induced fluorescence line-narrowing technique was used to obtain high-resolution spectra of isotopically enriched **1**4**3Nd**3** plus and **1**4**5Nd**3** plus ions in a LaCl//3 host. Nuclear magnetic dipole interactions were investigated for the **4I//9/////2 reversible reaction **2H//1//1/////2 and **4I//9/////2 reversible reaction **4G//5/////2 transitions in two-level and three-level systems.