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Published July 15, 1935 | public
Journal Article Open

Cloud chamber studies of the gamma-radiation from lithium bombarded with protons


The gamma-radiation emitted when lithium is bombarded with protons has been studied by means of a cloud chamber operating in a magnetic field of 2000 gauss. The spectrum consists of at least eleven lines, the highest of which is 16 MEV. The voltage excitation curve for the gamma-radiation shows a maximum at 650 kv proton energy, and is very different from the excitation curve for the 8.4-cm alpha-particles emitted under the same conditions. An attempt is made to interpret these results. The experimental procedure and methods of measuring the cloud chamber tracks are also discussed.

Additional Information

©1935 The American Physical Society. Received 30 April 1935. We wish to thank Professor J. R. Oppenheimer for many helpful discussions during the preparation of this paper. We are grateful to the Seeley W. Mudd Fund for the financial support of this work.


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