Independently of Gurney and Condon, he explained alpha decay rates by quantum tunneling and he developed a theory of beta decay with Edward Teller.  
This man's namesake factor is an exponential ratio of energies describing Coulomb barrier penetrability. Independently of Gurney and Condon, he explained alpha decay rates by quantum tunneling and he developed a theory of beta decay with Edward Teller.  Collaborating with Ralph Alpher on "The Origin of Chemical Elements," a later paper listed Hans Bethe among the authors as a joke. FTP, name this Russian- American physicist who theorized the Big Bang?
This man's namesake factor is an exponential ratio of energies describing Coulomb barrier penetrability.
George {Gamow}