| タイトル | High resolution measurements of galactic cosmic-ray neon, magnesium, and silicon isotopes |
| 著者（英） | Mewaldt, R. A.; Vogt, R. E.; Spalding, J. D.; Stone, E. C. |
| 著者所属（英） | California Inst. of Tech. |
| 発行日 | 1980-01-15 |
| 言語 | eng |
| 内容記述 | High-resolution measurements of the abundances of individual isotopes of neon, magnesium and silicon in galactic cosmic rays are reported. The Caltech Heavy Isotope Spectrometer Telescope on board the ISEE 3 spacecraft was used to obtain measurements in the range 30 to 180 MeV/n at an rms mass resolution of 0.20 amu. Results indicate excesses of Ne-22 as well as Mg-25 and Mg-26 in galactic cosmic rays with respect to their solar system abundances. Calculations of the effects of interstellar propagation and solar modulation on cosmic-ray isotope abundances also imply an Mg-25 + Mg-26 cosmic ray source fraction significantly greater than the solar system fraction, and it is suggested that the cosmic ray source material and solar system material were synthesized under different conditions. |
| NASA分類 | SPACE RADIATION |
| レポートNO | 80A23453 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/423010 |
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