Preprint Article Version 2 This version not peer reviewed

Rosetta Mission: Electron Scattering Cross Sections—Data Needs and Coverage in BEAMDB Database

Version 1 : Received: 21 September 2017 / Approved: 22 September 2017 / Online: 22 September 2017 (09:10:18 CEST)
Version 2 : Received: 20 October 2017 / Approved: 21 October 2017 / Online: 21 October 2017 (15:30:59 CEST)

A peer-reviewed article of this Preprint also exists.

Marinković, B.P.; Bredehöft, J.H.; Vujčić, V.; Jevremović, D.; Mason, N.J. Rosetta Mission: Electron Scattering Cross Sections—Data Needs and Coverage in BEAMDB Database. Atoms 2017, 5, 46. Marinković, B.P.; Bredehöft, J.H.; Vujčić, V.; Jevremović, D.; Mason, N.J. Rosetta Mission: Electron Scattering Cross Sections—Data Needs and Coverage in BEAMDB Database. Atoms 2017, 5, 46.

Journal reference: Atoms 2017, 5, 46
DOI: 10.3390/atoms5040046

Abstract

The emission of [O I] lines in the coma of Comet 67P/Churyumov-Gerasimenko during the Rosetta mission have been explained by electron impact dissociation of water rather than the process of photodissociation. This is the direct evidence for the role of electron induced processing has been seen on such a body. Analysis of other emission features is handicapped by a lack of detailed knowledge of electron impact cross sections which highlights the need for a broad range of electron scattering data from the molecular systems detected on the comet. In this paper we present an overview of the needs for electron scattering data relevant for the understanding of observations in coma, the tenuous atmosphere and on the surface of 67P/Churyumov-Gerasimenko during the Rosetta mission. The relevant observations for elucidating the role of electrons come from optical spectra, particle analysis using the ion and electron sensors and mass spectrometry measurements. To model these processes electron impact data should be collated and reviewed in an electron scattering database and an example is given in the BEAMD, which is a part of a larger consortium of Virtual Atomic and Molecular Data Centre – VAMDC.

Subject Areas

electron scattering; cross sections; Rosetta mission; atomic and molecular databases

Readers' Comments and Ratings (0)

Leave a public comment
Send a private comment to the author(s)
Rate this article
Views 0
Downloads 0
Comments 0
Metrics 0
Leave a public comment

×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.