Aa. Kalachev et Vv. Samartsev, THE PECULIARITIES OF ACCUMULATED LONG-LIVED PHOTON-ECHO IN VAN-VLECK PARAMAGNETICS, Laser physics, 6(4), 1996, pp. 735-738
Theory of accumulated long-lived photon echo in Van Vleck paramagnetic
s is developed. From comparison with experimental data obtained in LaF
3 : Pr3+ (the H-3(4)-P-3(0) transition) the relaxation rates of popula
tion of the H-3(4)(0) level hyperfine transitions are estimated.