electron transport and energy degradation in the ionosphere: evaluation of the numerical solution, comparison with laboratory experiments and auroral observations
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ID: 236871
1994
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Abstract
Auroral electron transport calculations are a
critical part of auroral models. We evaluate a numerical solution to the
transport and energy degradation problem. The numerical solution is verified by
reproducing simplified problems to which analytic solutions exist, internal
self-consistency tests, comparison with laboratory experiments of electron beams
penetrating a collision chamber, and by comparison with auroral observations,
particularly the emission ratio of the N2 second positive to N+2
first negative emissions. Our numerical solutions agree with range measurements
in collision chambers. The calculated N22P to N+21N
emission ratio is independent of the spectral characteristics of the incident
electrons, and agrees with the value observed in aurora. Using different sets of
energy loss cross sections and different functions to describe the energy
distribution of secondary electrons that emerge from ionization collisions, we
discuss the uncertainties of the solutions to the electron transport equation
resulting from the uncertainties of these input parameters.
| Reference Key |
lummerzheim1994annaleselectron
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|---|---|
| Authors | ;D. Lummerzheim;J. Lilensten |
| Journal | journal of food measurement and characterization |
| Year | 1994 |
| DOI |
10.1007/s00585-994-1039-7
|
| URL | |
| Keywords |
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