标题： 三年的伽利略尘埃数据：II。 1993年至1995年 显示英文标题

标题： Three years of Galileo dust data: II. 1993 to 1995

摘要： 1993年1月到1995年12月期间，伽利略航天器穿越了地球和木星之间的星际空间，并于1995年12月7日到达木星。 航天器上的尘埃仪器在大部分时间里都在运行。 在整个三年的时间跨度内，检测到相对稳定的星际和星际（大）粒子撞击率，为每天0.4次。 在太阳系外侧（约2.6 AU以外），这些粒子主要来源于星际空间，而在太阳系内侧，它们主要是星际粒子。 在距离木星约1.7 AU以内的区域，检测到强烈的微小尘埃粒子流，撞击率高达每天20,000次，其撞击方向与木星起源相符。 在木星磁层中检测到了两种不同的尘埃粒子群体：在伽利略接近木星期间的微小流体粒子，以及在伽利略卫星之间更靠近木星的较大粒子。 有强有力的证据表明，尘埃流体粒子的质量比仪器校准的小几个数量级，且速度更快，而校准适用于较大的粒子。 由于数据传输速率非常低，只有所有检测到的粒子中的一小部分（2525个）数据能够传送到地球；其他粒子仅被计数。 结合之前发表的358个粒子，现在可以获取到航天器在前往木星的六年旅程中由尘埃仪器检测到的2883个粒子的信息。 显示英文摘要

摘要： Between Jan 1993 and Dec 1995 the Galileo spacecraft traversed interplanetary space between Earth and Jupiter and arrived at Jupiter on 7 Dec 1995. The dust instrument onboard was operating during most of the time. A relatively constant impact rate of interplanetary and interstellar (big) particles of 0.4 impacts per day was detected over the whole three-year time span. In the outer solar system (outside about 2.6 AU) they are mostly of interstellar origin, whereas in the inner solar system they are mostly interplanetary particles. Within about 1.7 AU from Jupiter intense streams of small dust particles were detected with impact rates of up to 20,000 per day whose impact directions are compatible with a Jovian origin. Two different populations of dust particles were detected in the Jovian magnetosphere: small stream particles during Galileo's approach to the planet and big particles concentrated closer to Jupiter between the Galilean satellites. There is strong evidence that the dust stream particles are orders of magnitude smaller in mass and faster than the instrument's calibration, whereas the calibration is valid for the big particles. Because the data transmission rate was very low, the complete data set for only a small fraction (2525) of all detected particles could be transmitted to Earth; the other particles were only counted. Together with the 358 particles published earlier, information about 2883 particles detected by the dust instrument during Galileo's six years' journey to Jupiter is now available.