| タイトル | Comet Halley neutral gas density profile along the Vega 1 trajectory measured by NGE |
| 著者（英） | Hunten, D. M.; Afonin, V. V.; Curtis, C. C.; Richter, A. K.; Ip, WING-H.; Dyachkov, A. V.; Keppler, E.; Fan, C. Y.; Umlauft, G.; Hsieh, K. C. |
| 著者所属（英） | Arizona Univ. |
| 発行日 | 1986-12-01 |
| 言語 | eng |
| 内容記述 | Data from the Vega 1 permitted the determination of the total neutral gas density profile along the spacecraft trajectory. Discounting small fluctuations, the field ionization source instrument measured a density profile which varied approximately as the inverse radial distance squared. Data from the electron impact ionization instrument yielded a series of calibration points; e.g., the neutral density at 100,000 km is 10,000/cc. The combined data provide a calibrated total density profile, and imply a neutral production rate of 10 to the 30th power molecules/sec. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 87N25209 |
| 権利 | Copyright, Distribution within the U.S. granted by agreement |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/233664 |
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