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Phys. Rev. 59, 223228 (1941)
[Issue 3 1 February 1941 ]
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Variation of the Rate of Decay of Mesotrons with Momentum
- Bruno Rossi* and David B. Hall
- University of Chicago, Chicago, Illinois
Received 13 December 1940In order to determine the dependence of the probability of decay on momentum, mesotrons with range between 196 and 311 g/cm2 of lead and mesotrons with range larger than 311 g/cm2 of lead were investigated separately. The softer group of mesotrons was found to disintegrate at a rate about three times faster than the more penetrating group, in agreement with the theoretical predictions based on the relativity change in rate of a moving clock. A new value of the proper lifetime of mesotrons of (2.4±0.3) x 10-6 sec. is determined, based upon measurements with particles with momentum of approximately 5 x 108 ev/c.
©1941 The American Physical Society
URL: http://link.aps.org/abstract/PR/v59/p223
DOI: 10.1103/PhysRev.59.223
* Now at Cornell University, Ithaca, New York.
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References
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; (b) 57, 461 (1940)
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