Other
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999stin...9941072r&link_type=abstract
Technical Report, NASA Goddard Space Flight Center Greenbelt, MD United States
Other
Abundance, Cosmic Rays, Solar Activity Effects, Galactic Cosmic Rays, Interstellar Matter, Particle Acceleration, Emission Spectra, Silicon, Iron, Ions, Oxygen, Helium, Neon, Magnesium, Sulfur, Argon
Scientific paper
We report the energy spectra and abundances of ions with atomic number, Z, in the interval Z is greater than or equal to 2 and Z is less than or equal to 36 and energies approximately 3-20 MeV/amu for solar and interplanetary quiet periods between 1994 November and 1998 April as measured by the large-geometry Low Energy Matrix Telescope (LEMT) telescope on the Wind spacecraft near Earth. The energy spectra show the presence of galactic (GCR) and "anomalous" cosmic ray (ACR) components, depending on the element. ACR components are reported for Mg and Si for the first time at 1 AU and the previous observation of S and Ar is confirmed. However, only GCR components are clearly apparent for the elements Ca, Ti, Cr, Fe, as well as for C. New limits are placed on a possible ACR contribution for other elements, including Kr.
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