Photometric measurement of cold helium ions in the magnetotail by an EUV Scanner onboard planet‐B: Evidence of the existence of cold plasmas in the near‐Earth plasma sheet
Photometric measurement of cold helium ions in the magnetotail by an EUV Scanner onboard planet‐B: Evidence of the existence of cold plasmas in the near‐Earth plasma sheet
复制标题
B 行星上的 EUV 扫描仪对磁尾中冷氦离子的光度测量：近地等离子体片中存在冷等离子体的证据
DOI：
10.1029/2000gl000100
复制
发表时间：
2000
影响因子：
5.2
通讯作者：
M. Nakamura
中科院分区：
文献类型：
--
作者：
I. Yoshikawa;A. Yamazaki;K. Shiomi;K. Yamashita;Y. Takizawa;M. Nakamura
通过使用行星B上的XUV扫描仪，首次成功地对等离子体片中的He+离子进行了光学测量。He II（304 μ m）的强度为0.02瑞利。这一结果鼓励未来通过探测He II（304 μ m）发射来对整个磁层进行成像。这也证明了等离子体片中存在冷等离子体。冷离子的存在带来了一个新的问题：它们如何在等离子体片中保持低温？
The first optical measurement of He+ ions in the plasma sheet was successful by using the XUV scanner onboard Planet‐B. The intensity of He II (304 Å) was ∼0.02 Rayleigh. This result encourages future imaging missions for the whole magnetosphere by detecting He II (304 Å) emission. This is also a proof of the existence of cold plasmas in the plasma sheet. The existence of cold ions brings a new question: How can they remain cold in the plasma sheet?