11 ALIKHAN'YAN 



of /Li-^-e + y disintegration. Zhur. Expt'l. i Teoret. Fiz. 42, 

 #2, 630-31 (1962). 

 Biography: 



Academician A. I. Alikhanov (on his 50th birthday). Zhur. 

 Eksptl. i Teoret. Fiz., 1954, 27, #1. 

 Office: Institute of Theoretical & Experimental Physics of 



USSR Academy of Sciences 

 3 Pyzhevskii Pereulok 

 Moscow, USSR 

 Residence: Dorogmilovskaya, 31 



Moscow, USSR 

 Telephone: G3 50 22, Ext. 31 



ALIKHAN'YAN, ARTEMII ISAAKQVICH (Physicist) 



A. I. Alikhan'yan was born July 24, 1908. He graduated from 

 Leningrad University in 1931 and began, with A. I. Alikhanov, 

 work in nuclear physics and cosmic rays. Since 1943 he has 

 been an Academician of the Armenian SSR Academy of Sciences 

 and since 1946 a Corresponding Member of the U.S.S.R. Acade- 

 my of Sciences. In 1941 and 1948 he was awarded Stalin Prizes. 



From 1934, Alikhan'yan, with A. I. Alikhanov and M. S. 

 Kozodaev, discovered pair emission by excited nuclei. In 1935, 

 Alikhan'yan, with Alikhanov, established the law of the de- 

 pendence of beta-spectra on the atomic number of the element. 

 The main work of Alikhan'yan is devoted to the study of cosmic 

 rays. In association with Asatiani, he discovered showers with 

 few particles in cosmic rays (the so-called narrow showers). 

 Alikhan'yan also showed that in the composition of primary 

 components of cosmic radiation there are particles present 

 with energies up to LQI'^ electron-volts. In 1945 Alikhan'yan 

 helped establish a cosmic ray station on Mountain Aragats, 

 where he, with associates, conducted a magnetic analysis on 

 the mass of cosmic ray particles. 



In 1951-52 Alikhan'yan and his associates were successful 

 in separating particles with a mass ~ 200me in cosmic rays 

 and also in obtaining some indication of the existence of parti- 

 cles with masses of approximately 600me and 950me. 



As of 1961, Alikhan'yan was Director of the Armenian 

 Academy of Sciences Institute of Physics. 

 Bibliography: 



and A. Dadayan . Investigation of narrow showers at an alti- 

 tude of 3250 meters above sea level. Zhur. Eksptl. i. 

 Teoret. Fiz., 1949, #1. 



