doctoral_advisor death_date death_place work_institution birth_place citizenship image_size nationality ethnicity field birth_date known_for article_title name alma_mater
s. n. nernov 25 january 2001 moscow , russia moscow commission state university chairman of the iupap cosmic ray russia ussr , russia 140px russia russian physicist 16 june 1921 chudakov effect aleksandr chudakov
 aleksandr evgenievich chudakov moscow state university
aleksandr chudakov

aleksandr evgenievich chudakov -lrb- 16 june 1921 -- 25 january 2001 , moscow -rrb- was a soviet russian physicist in the field of cosmic-ray physics , known for `` chudakov effect '' , the effect of decreasing ionization losses for narrow electron-positron pairs and for experimentally confirming existence of the transition radiation .
he was also the chairman of the iupap cosmic ray commission .
