George Gamow
In 1932, George Gamow and Lev Mysovskii submitted a draft for consideration by the Academic Council of Radium Institute, which was approved by the Soviet government. Khlopin, under the guidance and direct participation of Igor Kurchatov, Lev Mysovskii and George Gamow, installed Europe's first cyclotron particle accelerator. Installation was finished in 1937, and research began to take place on 21 September 1939.