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Electron impact ion...
Electron impact ionization in the icy Galilean satellites' atmospheres
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- Mogan, Shane Carberry R. (författare)
- Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
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- Johnson, Robert E. (författare)
- Univ Virginia, Charlottesville, VA USA.;NYU, New York, NY USA.
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- Vorburger, Audrey (författare)
- Univ Bern, Bern, Switzerland.
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- Roth, Lorenz (författare)
- KTH,Rymd- och plasmafysik
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Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA Univ Virginia, Charlottesville, VA USA.;NYU, New York, NY USA. (creator_code:org_t)
- 2023-02-17
- 2023
- Engelska.
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Ingår i: European Physical Journal D. - : Springer Nature. - 1434-6060 .- 1434-6079. ; 77:2
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Electron impact ionization is critical in producing the ionospheres on many planetary bodies and, as discussed here, is critical for interpreting spacecraft and telescopic observations of the tenuous atmospheres of the icy Galilean satellites of Jupiter (Europa, Ganymede, and Callisto), which form an interesting planetary system. Fortunately, laboratory measurements, extrapolated by theoretical models, were developed and published over a number of years by K. Becker and colleagues (see Deutsch et al. in Adv At Mol Opt Phys 57:87-155, 2009) to provide accurate electron impact ionization cross sections for atoms and molecules, which are crucial to correctly interpret these measurements. Because of their relevance for the Jovian icy satellites, we provide useful fits to the complex, semiempirical Deutsch-Ma spexpressioncing diexpressioneresis rk formula for energy-dependent electron impact ionization cross sections of gas-phase water products (i.e., H2O, H-2, O-2, H, O). These are then used with measurements of the thermal plasma in the Jovian magnetosphere to produce ionization rates for comparison with solar photo-ionization rates at the icy Galilean satellites.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- ref (ämneskategori)
- art (ämneskategori)
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