Computer Science
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.confr.105m&link_type=abstract
International Solar Wind 8 Conference, p. 105
Computer Science
Cosmic Rays, Energetic Particles, Energy Spectra, Geomagnetism, Nucleons, Latitude, Magnetic Rigidity, Oxygen, Helium, Iron
Scientific paper
We report new measurements of the composition and energy spectra of anomalous cosmic rays (ACRs) made with the MAST instrument of SAMPEX. The 82 deg orbit on SAMPEX allows MAST to survey the magnetic latitude distribution of energetic particles with greater than 15 MeV/nuc. Because ACRs are singly-charged, they have a much greater magnetic rigidity than solar energetic particles or galactic cosmic rays with the same energy/nuc, and can be observed to much lower latitude. This allows SAMPEX to employ the Earth's field as a magnetic filter to obtain a 'pure' sample of ACR nuclei, uncontaminated by solar particles or galactic cosmic rays. We report new measurements of the composition and energy spectra of 'anomalous' nuclei from He to Fe observed by this 'double spectrometer' approach. In particular, the energy spectrum of ACR oxygen is observed to extend to approximately 100 MeV/nucleon, which has implications for the ACR acceleration mechanism.
Cummings Alan C.
Cummings Jay R.
Leske Richard A.
Mewaldt Richard A.
Stone Edward C.
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