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Study of energetic solar particle events of 18 November 1968, 25 February 1969, and 30 March 1969The solar particle events of 18 November 1968, 25 February 1969, and 30 March 1969 were studied using data from the detector system aboard the lunar orbiting satellite Explorer 35. Protons, alpha particles, and Z or = 3 nuclei were registered in the solid state detector of the system. Interplanetary propagation, particle anisotropy, and the intensity ratios of protons to alpha particles and of alpha particles to C, N, and O nuclei above a common specific energy of 0.5 MeV/nucleon were studied. Diffusion coefficients and decay constants for the three events are given, as well as magnitudes and directions of anisotropies.
Document ID
19720017183
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Venkatarangan, P. (Calgary Univ. Alberta, Canada)
Venkatesan, D. (Iowa Univ. Iowa City, IA, United States)
Vanallen, J. A. (Iowa Univ. Iowa City, IA, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Subject Category
Space Radiation
Report/Patent Number
U-OF-IOWA-71-27
NASA-CR-126661
Accession Number
72N24833
Funding Number(s)
CONTRACT_GRANT: NGL-16-001-002
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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