Upper limits to the quiet-time solar neutron flux from 10 to 100 MeV

Journal Article · Thu Jul 15 04:00:00 EDT 1976 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/154529· OSTI ID:7337268

Moon, S; Simnett, G M; White, R S

The University of California, Riverside, large area solid-angle double scatter neutron telescope was flown to search for solar neutrons on three balloon flights on 1971 September 26, 1972 May 14, and 1972 September 19. The first two flights were launched from Palestine, Texas and the third from Cape Girardeau, Missouri. The float altitude on each flight was at about 5 g cm/sup -2/ residual atmosphere. Neutrons from 10 to 100 MeV were measured. No solar flares occurred during the flights. Upper limits to the quiet-time solar neutron fluxes at the 95 percent confidence level are 2.8, 4.6, 9.6, and 9.0 x 10/sup 4/ neutrons cm/sup -2/ s/sup -1/ in the energy intervals of 10--30, 30--50, 50--100, and 10--100 MeV, respectively. (AIP)

• Research Organization: Department of Physics and Institute of Geophysics and Planetary Physics, University of California, Riverside
• OSTI ID: 7337268
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 207:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIATION
IONIZING RADIATIONS
LIMITING VALUES
MEASURING INSTRUMENTS
NEUTRON DETECTORS
NEUTRON FLUX
RADIATION DETECTORS
RADIATION FLUX
RADIATIONS
SOLAR ACTIVITY
SOLAR FLARES
SOLAR WIND
STARS
SUN