155 KHARITON 



Utilization of Results from Topographico-geodesic Work for 

 Engineering Purposes. Leningrad -Mo scow: 1950. 

 Indications for Using Geometrical and Geodesical Proper- 

 ties of Aerial Photo -materials for Geological Mapping. 

 Leningrad-Moscow: 1950. 



Measurement Deciphering of Aerial Photos in Field Con- 

 ditions. Moscow -Leningrad: 1959. 



and V. G. Zdanovich, K. A. Zvonarev, A. N. Belolikov, N. A. 

 Gusev . Higher Geodesy. Moscow: 1961. 



Biography: 



L. S. Khrenov . Nikolai Georgievich Kell'. Proceedings of 

 the All-Union Geographic Society, 1953, 85, #3. 



Office: Laboratory of Aeromethods 



USSR Ministry of Geology and Mineral Conservation 

 Birzhevoi Proyezd, 6 

 Leningrad, V-164, USSR 



Telephone: A2 45 64 



KHARITON, YULII BORISOVICH (Nuclear Physicist) 



Yu. B. Khariton was born February 27, 1904. In 1925 he 

 graduated from Leningrad Polytechnic Institute. While still a 

 student, in 1921, he began scientific work at the Laboratory of 

 N. N. Semenov of the Leningrad Physico -Technical Institute. 

 In 1927-28 Khariton was sent to England where he studied the 

 scintillation of alpha-particles under E. Rutherford. In 1931 he 

 began working at the Institute of Chemical Physics of the 

 U.S.S.R. Academy of Sciences. He was elected a Correspond- 

 ing Member of the U.S.S.R. Academy of Sciences in 1943 and 

 an Academician in 1953. He was also a Deputy to the U.S.S.R. 

 Supreme Soviet, and was elected again in March 1962. 



The first investigation of Khariton was the study of conden- 

 sation of metallic vapor molecular beams in a vacuum on cooled 

 surfaces. The result was the basis for the theory on conden- 

 sation, later developed by Khariton and other Soviet scientists. 

 In 1925 Khariton, while studying the phenomena of chemi- 

 luminescence of vapors of phosphorus at low oxygen pressures, 

 discovered the phenomenon of the lower limit of cold ignition 

 of phosphorous vapors. He showed that below a certain pres- 

 sure of oxygen, the reaction of oxidation does not take place, 

 and above a certain pressure, moves with noticeable speed. 

 Together with Ya. B. Zel'dovich, Khariton made calculations 

 for a chain reaction of uranium fission. Khariton, and associ- 

 ates, worked on the theory of excitation and spreading of ex- 

 plosion detonations; in particular he established the principle 



