globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA024536
Scopus记录号: 2-s2.0-85040625942
论文题名:
Modeling, Analysis, and Interpretation of Photoelectron Energy Spectra at Enceladus Observed by Cassini
作者: Taylor S.A.; Coates A.J.; Jones G.H.; Wellbrock A.; Fazakerley A.N.; Desai R.T.; Caro-Carretero R.; Michiko M.W.; Schippers P.; Waite J.H.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:1
起始页码: 287
结束页码: 296
语种: 英语
英文关键词: Enceladus ; photoelectrons ; Saturn
英文摘要: The Electron Spectrometer (ELS) of the Cassini Plasma Spectrometer has observed photoelectrons produced in the plume of Enceladus. These photoelectrons are observed during Enceladus encounters in the energetic particle shadow where the spacecraft is largely shielded from penetrating radiation by the moon. We present a complex electron spectrum at Enceladus including evidence of two previously unidentified electron populations at 6–10 eV and 10–16 eV. We estimate that the proportion of “hot” (>15 eV) to “cold” (<15 eV) electrons during the Enceladus flybys is ≈ 0.1–0.5%. We have constructed a model of photoelectron production in the plume and compared it with ELS Enceladus flyby data by scaling and energy shifting according to spacecraft potential. We suggest that the complex structure of the electron spectrum observed can be explained entirely by photoelectron production in the plume ionosphere. ©2018. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114743
Appears in Collections:气候减缓与适应

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作者单位: Mullard Space Science Laboratory, University College London, Dorking, United Kingdom; The Centre for Planetary Sciences at UCL/Birkbeck, London, United Kingdom; Escuela Técnica Superior de Ingeniería - ICAI, Universidad Pontificia Comillas, Madrid, Spain; Swedish Institute of Space Physics (IRF), Uppsala, Sweden; LESIA, Observatoire de Paris, Meudon, France; Southwest Research Institute, San Antonio, TX, United States

Recommended Citation:
Taylor S.A.,Coates A.J.,Jones G.H.,et al. Modeling, Analysis, and Interpretation of Photoelectron Energy Spectra at Enceladus Observed by Cassini[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(1)
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