Imperial College London
Alternate

ProfessorMarinaGaland

Faculty of Natural Sciences, Department of Physics

Professor in Planetary Science
 
 
 
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Contact

 

m.galand Website

 
 
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Location

 

Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Beth:2017:mnras/stw3370,
author = {Beth, A and Altwegg, K and Balsiger, H and Berthelier, J-J and Calmonte, U and Combi, MR and De, Keyser J and Dhooghe, F and Fiethe, B and Fuselier, SA and Galand, M and Gasc, S and Gombosi, TI and Hansen, KC and Hassig, M and Heritier, KL and Kopp, E and Le, Roy L and Mandt, KE and Peroy, S and Rubin, M and Semon, T and Tzou, C-Y and Vigren, E},
doi = {mnras/stw3370},
journal = {Monthly Notices of the Royal Astronomical Society},
pages = {S562--S572},
title = {First in situ detection of the cometary ammonium ion NH4+ (protonated ammonia NH3) in the coma of 67P/C-G near perihelion},
url = {http://dx.doi.org/10.1093/mnras/stw3370},
volume = {462},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - In this paper, we report the first in situ detection of the ammonium ion NH+44+ at 67P/Churyumov–Gerasimenko (67P/C-G) in a cometary coma, using the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA)/Double Focusing Mass Spectrometer (DFMS). Unlike neutral and ion spectrometers onboard previous cometary missions, the ROSINA/DFMS spectrometer, when operated in ion mode, offers the capability to distinguish NH+44+  from H2O+ in a cometary coma. We present here the ion data analysis of mass-to-charge ratios 18 and 19 at high spectral resolution and compare the results with an ionospheric model to put these results into context. The model confirms that the ammonium ion NH+44+  is one of the most abundant ion species, as predicted, in the coma near perihelion.
AU  - Beth,A
AU  - Altwegg,K
AU  - Balsiger,H
AU  - Berthelier,J-J
AU  - Calmonte,U
AU  - Combi,MR
AU  - De,Keyser J
AU  - Dhooghe,F
AU  - Fiethe,B
AU  - Fuselier,SA
AU  - Galand,M
AU  - Gasc,S
AU  - Gombosi,TI
AU  - Hansen,KC
AU  - Hassig,M
AU  - Heritier,KL
AU  - Kopp,E
AU  - Le,Roy L
AU  - Mandt,KE
AU  - Peroy,S
AU  - Rubin,M
AU  - Semon,T
AU  - Tzou,C-Y
AU  - Vigren,E
DO  - mnras/stw3370
EP  - 572
PY  - 2017///
SN  - 0035-8711
SP  - 562
TI  - First in situ detection of the cometary ammonium ion NH4+ (protonated ammonia NH3) in the coma of 67P/C-G near perihelion
T2  - Monthly Notices of the Royal Astronomical Society
UR  - http://dx.doi.org/10.1093/mnras/stw3370
UR  - http://hdl.handle.net/10044/1/52719
VL  - 462
ER  -
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