Lancaster, American Physical Society, 1935. Lex8vo. Entire volume in the original printed blue/grey wrappers. Minor miscolouring and soiling to extremities. A fine and clean copy. Pp. 500-2. [Entire issue: Pp. 491-572].
First printing of this important paper in which the Oppenheimer-Phillips process was presented for the first time - Oppenheimer's ""most important contribution in this area"" (Oppenheimer. A Life. P. 29).A deuteron, entering a heavy nucleus, is split into proton plus neutron, one of these particles being retained by the nucleus while the other is re-emitted. After the second world war this became a fundamental tool in the study of nuclear energy levels and their properties. Phillips was Oppenheimer's research associate in 1933-4.In ""The Physical Review - The First Hundred Years. A Selection of Seminal Papers and Commentaries"".