Galactic cosmic ray intensity 0. 99 to 5. 26 a. u. from the Sun. Progress report
Technical Report
·
OSTI ID:7346186
The intensity of galactic cosmic radiation in interplanetary space has been observed over the heliocentric radial range 0.99 < r < 5.26 a.u. with five Geiger--Mueller tubes on the Jupiter-bound spacecraft Pioneer 10 and over the range 1.00 < r < 3.59 a.u. with three similar tubes on Pioneer 11, also bound for Jupiter. The observations span the time period 1972 March 3 to 1974 April 29, near the epoch of minimum solar activity. The contributions of solar energetic particles are eliminated. (GRA)
- Research Organization:
- Iowa Univ., Iowa City (USA). Dept. of Physics and Astronomy
- OSTI ID:
- 7346186
- Report Number(s):
- AD-A-014613
- Country of Publication:
- United States
- Language:
- English
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