| タイトル | Emulsion chamber observations of primary cosmic-ray electrons in the energy range 30-1000 GeV |
| 著者（英） | Niu, K.; Fujii, M.; Golden, R. L.; Aizu, E.; Ohta, I.; Hiraiwa, H.; Taira, T.; Koss, T. A.; Nishimura, J.; Kobayashi, T. |
| 著者所属（英） | Washington Univ.|New Mexico State Univ.|Nagoya Univ.|Tokyo Univ. |
| 発行日 | 1980-05-15 |
| 言語 | eng |
| 内容記述 | The results of a series of emulsion exposures, beginning in Japan in 1968 and continued in the U.S. since 1975, which have yielded a total balloon-altitude exposure of 98,700 sq m sr s, are presented. The data are discussed in terms of several models of cosmic-ray propagation. Interpreted in terms of the energy-dependent leaky-box model, the spectrum results suggest a galactic electron residence time of 1.0(+2.0, -0.5) x 10 to the 7th yr, which is consistent with results from Be-10 observations. Finally, the possibility that departures from smooth power law behavior in the spectrum due to individual nearby sources will be observable in the energy range above 1 TeV is discussed. |
| NASA分類 | SPACE RADIATION |
| レポートNO | 80A40670 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/421272 |
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