Nuclear acoustic resonance of Pr141 in a F3 Van Vleck paramagnet
Al'tshuler S.A. , Duglav A.V. , Kasanov A.Kh., Bol'shakov I.G., Teplov M.A.
Observations are given for the first time for the nuclear acoustic resonance of Pr3 + ions in the singlet ground electronic state in a PrF3 crystal. The experiment was carried out at 4.2 К using —21 and ~ 36 MHz ultrasonic frequencies.