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Further Studies on the Origin of Cosmic Rays Helium Annihilation Rays and the Cause of Their Variability with Time

Millikan, Robert A. and Neher, H. Victor and Pickering, William H. (1944) Further Studies on the Origin of Cosmic Rays Helium Annihilation Rays and the Cause of Their Variability with Time. Physical Review, 66 (11/12). pp. 295-302. ISSN 0031-899X. http://resolver.caltech.edu/CaltechAUTHORS:MILpr44

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Abstract

We find definite evidence that a new band of rays which we interpret as helium annihilation rays does come in vertically at about the predicted latitude. We present a discussion of the possible composite character of the so-called silicon annihilation band and of the so-called oxygen annihilation band. We then bring forward an explanation of the cause of our large and already reported variability in the cosmic-ray intensities found in high altitude electroscope flights at Bismarck, Omaha, and Oklahoma City. We also make a new and more accurate determination of the value of the field sensitive and the non-field sensitive components of the incoming cosmic rays.


Item Type:Article
Additional Information:©1944 The American Physical Society Received 16 October 1944 This investigation, like many preceding ones, has had support from the Carnegie Corporation of New York administered by the Carnegie Institution of Washington. For this aid, as well as the aid given us by Dr. Seth B. Nicholson and Director Colbert, the authors would like to express their keen appreciation.
Issue or Number:11/12
Record Number:CaltechAUTHORS:MILpr44
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MILpr44
Alternative URL:http://dx.doi.org/10.1103/PhysRev.66.295
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6426
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:08 Dec 2006
Last Modified:26 Dec 2012 09:21

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