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Cosmic-Ray Negatron and Positron Spectra Between 12 and 220 MeV

Beuermann, K. P. and Rice, C. J. and Stone, E. C. and Vogt, R. E. (1969) Cosmic-Ray Negatron and Positron Spectra Between 12 and 220 MeV. Physical Review Letters, 22 (9). pp. 412-415. ISSN 0031-9007. doi:10.1103/PhysRevLett.22.412.

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The interplanetary negatron and positron spectra from 12 to 220 MeV have been determined with a balloon-borne magnetic spectrometer. The observed charge ratio e^+(e^+ + e^−)≈0.3 indicates that the flux most likely consists of a mixture of "primary" negatrons and interstellar "secondary" negatrons and positrons. We deduce an absolute solar modulation of the interstellar positron flux which decreases with decreasing magnetic rigidity below about 80 MV.

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Stone, E. C.0000-0002-2010-5462
Additional Information:© 1969 American Physical Society. Received 23 December 1968. Work supported by the National Aeronautics and Space Administration under Grant No. NGL-05-002-007. Space Radiation Laboratory. SRL ID #: 1969-04.
Group:Space Radiation Laboratory
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Space Radiation Laboratory1969-04
Issue or Number:9
Record Number:CaltechAUTHORS:20140407-083050683
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44674
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Deposited On:07 Apr 2014 16:29
Last Modified:10 Nov 2021 16:55

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