Science. 1979 Feb 23;203(4382):755-7. doi: 10.1126/science.203.4382.755.
Bennett radio-frequency ion mass spectrometers have returned the first in situ measurements of the Venus dayside ion composition, including evidence of pronounced structural variability resulting from a dynamic interaction with the solar wind. The ionospheric envelope, dominated above 200 kilometers by O(+), responds dramatically to variations in the solar wind pressure, Which is observed to compress the thermal ion distributions from heights as great as 1800 kilometers inward to 280 kilometers. At the thermal ion boundary, or ionopause, the ambient ions are swept away by the solar wind, such that a zone of accelerated suprathermnal plasma is encountered. At higher altitudes, extending outward on some orbits for thousands of kilometers to the bows shock, energetic ion currents are detected, apparently originating from the shocked solar wind plasma. Within the ionosphere, observations of pass-to-pass differences in the ion scale heights are indicative of the effects of ion convection stimlulated by the solar wind interaction.
贝内特射频离子质谱仪首次在金星向日面原位测量到离子成分，其中包括由于与太阳风的动态相互作用而产生的明显结构可变性的证据。在 200 公里以上高度由 O(+)主导的电离层包层对太阳风压力的变化做出剧烈响应，观测到将热离子分布从高达 1800 公里的高度向内压缩到 280 公里。在热离子边界或离子opause 处，环境离子被太阳风扫除，从而遇到加速的超热等离子体区。在更高的高度上，在一些轨道上向 bow shock 延伸数千公里，探测到高能离子电流，显然源自受激太阳风等离子体。在电离层内，观测到离子尺度高度的逐次通过差异，表明受太阳风相互作用刺激的离子对流的影响。
