Neddermeyer, Seth H. and Anderson, Carl D. (1937) Note on the nature of cosmic-ray particles. Physical Review, 51 (10). pp. 884-886. ISSN 0031-899X http://resolver.caltech.edu/CaltechAUTHORS:NEDpr37
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Measurements (1) of the energy loss of particles occurring in the cosmic-ray showers have shown that this loss is proportional to the incident energy and within the range of the measurements, up to about 400 Mev, is in approximate agreement with values calculated theoretically for electrons by Bethe and Heitler. These measurements were taken using a thin plate of lead (0.35 cm), and the observed individual losses were found to vary from an amount below experimental detection up to the whole initial energy of the particle, with a mean fractional loss of about 0.5.
|Additional Information:||©1937 The American Physical Society. Received 30 March 1937. We wish to express our gratitude to Professor Millikan for his helpful discussions and encouragement. These experiments have been made possible by the Baker Company, who very generously loaned us the bar of platinum; and by funds supplied by the Carnegie Institution of Washington.|
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|Deposited By:||Tony Diaz|
|Deposited On:||31 Aug 2007|
|Last Modified:||26 Dec 2012 09:40|
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