Abstract
view Abstract Citations (23) References (53) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The isotopic composition of the anomalous low-energy cosmic rays Mewaldt, R. A. ; Spalding, J. D. ; Stone, E. C. Abstract Measurements of the isotopes of low energy cosmic ray He, C, N, O and Ne nuclei are analyzed, in concert with previous data, to examine relationships between galactic cosmic rays (GCR) and anomalous cosmic rays (ACR), which could arise from either extragalactic or interstellar sources. A ground-based heavy isotope spectrometer telescope was used for the survey, along with IMP-7 and IMP-8 data and ISEE-3 data. The data were recorded from 1973-78. Spectral and abundance data are provided for each element. Fragmentation was absent in the ACR data, unlike the GCR data. Differences were also observed in the Ne-22/Ne-20 ratios of ACR and GCR. It is suggested, therefore, that the low energy ACR isotopes have an interstellar origin and are useful for studies of the local interstellar medium. Publication: The Astrophysical Journal Pub Date: August 1984 DOI: 10.1086/162324 Bibcode: 1984ApJ...283..450M Keywords: Energy Spectra; Galactic Cosmic Rays; Interstellar Matter; Isotopes; Abundance; Anomalies; Particle Energy; Stellar Winds; Space Radiation full text sources ADS |
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