Cosmic-ray spectra of H-1, H-2, and He-4 as a test of the origin of the hydrogen superfluxes at solar minimum modulation

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/163311· OSTI ID:5574313

Beatty, J J; Garcia-Munoz, M; Simpson, J A

Low-energy 1-AU cosmic-ray spectra obtained using the IMP-8 satellite cosmic-ray telescope (Garcia-Munoz et al., 1975) at quiet times during the solar minimum of 1972-1977 are reported and combined with published data on that minimum and the previous one (1965), with a focus on the anomalous He-4 and heavy-nucleus spectra and proton and helium superfluxes observed in 1972-1977. The 56-MeV/nucleon H-2/H-1 and H-2/He-4 abundance ratios and the differential energy spectra are plotted versus time and solar modulation level over an entire cycle, and the proton and He superfluxes, which do not contribute to the anomalies, are attributed to the reduced levels of residual modulation present during 1972-1977. 31 references.

• Research Organization: Chicago Univ., IL
• OSTI ID: 5574313
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 294; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
BARYONS
COSMIC NUCLEI
COSMIC PROTONS
COSMIC RADIATION
DEUTERIUM
ELEMENTARY PARTICLES
ENERGY SPECTRA
EXPLORER SATELLITES
FERMIONS
FLUX DENSITY
HADRONS
HELIUM ISOTOPES
HYDROGEN ISOTOPES
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PROTONS
RADIATIONS
SATELLITES
SOLAR CYCLE
SPECTRA
STABLE ISOTOPES