Observation of O+ (4P-4D0) lines in proton aurora over Svalbard
Observation of O+ (4P-4D0) lines in proton aurora over Svalbard
Spectra of a proton aurora event show lines of O+ 4P-4D0 multiplet (4639–4696 Å) enhanced relative to the N2+1N(0,2) compared to normal electron aurora. Conjugate satellite particle measurements are used as input to electron and proton transport models, to show that p/H precipitation is the dominant source of both the O+ and N2+1N emissions. The emission cross-section of the multiplet in p collisions with O and O2 estimated from published work does not explain the observed O+ brightness, suggesting a higher emission cross-section for low energy p impact on O.
Ivchenko, N.
c892df9e-e2a0-450f-bf77-2673e029f565
Galand, M.
bce54d89-783b-411e-b926-5c803f6a2a31
Rees, M.H.
6ecc0166-51bf-4afd-9471-acbb415fd156
Lanchester, B.S.
e864533e-eea0-471f-a3f9-7c70c25be55b
Lummerzheim, D.
6432baa4-48ac-4203-bc2d-973de7f3efde
2004
Ivchenko, N.
c892df9e-e2a0-450f-bf77-2673e029f565
Galand, M.
bce54d89-783b-411e-b926-5c803f6a2a31
Rees, M.H.
6ecc0166-51bf-4afd-9471-acbb415fd156
Lanchester, B.S.
e864533e-eea0-471f-a3f9-7c70c25be55b
Lummerzheim, D.
6432baa4-48ac-4203-bc2d-973de7f3efde
Ivchenko, N., Galand, M., Rees, M.H., Lanchester, B.S. and Lummerzheim, D.
(2004)
Observation of O+ (4P-4D0) lines in proton aurora over Svalbard.
Geophysical Research Letters, 31 (L10807).
(doi:10.1029/2003GL019313).
Abstract
Spectra of a proton aurora event show lines of O+ 4P-4D0 multiplet (4639–4696 Å) enhanced relative to the N2+1N(0,2) compared to normal electron aurora. Conjugate satellite particle measurements are used as input to electron and proton transport models, to show that p/H precipitation is the dominant source of both the O+ and N2+1N emissions. The emission cross-section of the multiplet in p collisions with O and O2 estimated from published work does not explain the observed O+ brightness, suggesting a higher emission cross-section for low energy p impact on O.
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Published date: 2004
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Local EPrints ID: 9125
URI: http://eprints.soton.ac.uk/id/eprint/9125
ISSN: 0094-8276
PURE UUID: 9df8d123-8c7e-4641-bf82-735db88adda2
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Date deposited: 24 Sep 2004
Last modified: 15 Mar 2024 04:55
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Author:
N. Ivchenko
Author:
M. Galand
Author:
M.H. Rees
Author:
B.S. Lanchester
Author:
D. Lummerzheim
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