684 (Continued) 
Selected Staff Members: 
A. N. Arsenyeva-Geyl 
N. N. Davidenkov, Academician (Ukrainian S.S.R.), Head of a 
Laboratory 
L. N. Dobretsov, Professor 
A. Z. Dolginov 
V. N. Gribov 
A. P. Grinberg, Professor 
G. A. Grinberg, Corresponding Academician (UoSe8c 
Ye. F. Gross, Corresponding Academician (U.S.S.R. 
Laboratory 
D. M. Kaminker, Doctor 
V. M. Kel'man, Professor, Head of Laboratory of Nuclear Spectroscopy 
A. P. Komar, Academician (Ukrainian S.S.R.) 
L. A. Kul'chitskiy, Doctor 
A. A. Lebedev, Academician (U.S.S.R.) 
I. Kh. Lemberg 
D. N. Nasledov, Head of Laboratory 
P. P. Pavinskiy, Professor 
N. M. Reynov, Head of Cryogenics Laboratory 
M. N. Rumsh 
L. I. Rusinov, Professor 
S. M. Ryvkin, Doctor 
I. M. Shmushkevich, Professor 
A. V. Stepanov, Head of Laboratory 
V. M. Tuchkevich, Professor 
B. P. Zakharchenya 
S. N. Zhurkov, Corresponding Academician (U.S.S.R.) 
» Head of 
Description: 
This institute was founded in 1917 by A. F. Ioffe and N. N. Semenov. 
LFTI has the first cyclotron built in the U.S.S.R. and a 100-Mev electron 
synchrotron. Its primary fields of research are solid-state physics (elec- 
trical and physical properties of solids; strength of materials), electronics 
(thermionic emission and gas discharges), and nuclear physics. 
The Institute conducts research on high-energy nuclear reactions, 
and has been involved in the study of controlled thermonuclear reactions and 
plasma physics. The Institute’s nuclear reactor has been used to study the 
effects of radiation on materials. Many of these studies have also been 
concerned with semiconductors. In 1950, it began systematic work on the 
physical-chemical analysis of germanium, silicon, and other semiconductors. 
It has also worked on the theory of impurity levels and electronic properties 
of semiconductors. Some work on magnetohydrodynamics is under way here, and 
another recent project was concerned with the direct conversion of thermal 
into electrical energy. A silicon counter was developed at LFTI for use in 
nuclear spectrometry. The Institute also has a Mathematical-Physics Division. 
