PHYSICS

Excitation of sound pulses in liquid $^4\mathrm{He}$ during the germanium optical pumping

I. V. Kavetskaya, N. N. Sibel'din, V. B. Stopachinskii, V. A. Tsvetkov

P. N. Lebedev Physical Institute, the USSR Academy of Sciences, Moscow

UDC: 536.48:537.311.33

Presented: M. V. Keldysh
Received: 12.10.1978