Abstract: | The temperature dependences of the spin-lattice relaxation of rare-earth ions (RE3+) are investigated in YLiF4 single crystals. The EPR spectra of Er3+ and Dy3+ are detected and studied at the excited levels of the ground terms. The prospects for RE3+-YLiF4 matrices for the production of polarized targets are shown.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 93–99, September, 1978. |