 In early 1945 , Harrie Massey offered Burhop a position as a lecturer in the Mathematics Department at University College , London . He fostered international cooperation in nuclear physics . As part of a five @-@ nation study of K mesons and their interaction with atomic nuclei that went on for several years , his group produced a wealth of new results , including the first observation of a double lambda <unk> . He spent a year on secondment to CERN , as secretary of a committee that recommended the construction of the Intersecting Storage Rings and the Super Proton Synchrotron . In 1974 and 1975 , an international team under his leadership carried out a successful search for the Λ + 
