PHYSICS

Experimental determination of inverse population in the crystal $\mathrm{CaWO}_4:\mathrm{Nd}^{3+}$

N. K. Bel'skii, D. A. Muhamedova

Kurnakov Institute of General and Inorganic Chemistry of the USSR Academy of Sciences, Moscow

UDC: 535

Presented: I. V. Obreimov
Received: 23.04.1970