On 29 March, Julius Rosenberg, his wife, Ethel, and Morton Sobell were found guilty of conspiracy to commit wartime espionage. The Rosenbergs were executed on 19 June. Sobell, by contrast, was sentenced to 30 years. He was released in 1969.
Richert, Lucas Paul. "Rosenbergs guilty of passing atomic secrets to Russia". The Literary Encyclopedia. First published 01 October 2008
[http://www.litencyc.com/php/stopics.php?rec=true&UID=3223, accessed 26 November 2015.]