‎"OPPENHEIMER, J. R. (+) M. PHILLIPS.‎
‎Note on the Transmutation Function for Deutrons. [In ""The Physical Review, Volume 48, Second Series, Number 6, September, 1935]. - [FIRST PUBLICATION OF THE OPPENHEIMER-PHILLIPS PROCESS]‎

‎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].‎

Reference : 44885

‎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"".‎