University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Laboratory surface astrochemistry experiments

Frankland, Victoria, Rosu-Finsen, A, Lasne, J, Collings, MP and McCoustra, MRS (2015) Laboratory surface astrochemistry experiments Review of Scientific Instruments, 86, 055103.

Frankland_RevSciInstrum_2015_86_055103.pdf - Version of Record

Download (2MB) | Preview


Although several research groups have studied the formation of H2 on interstellar dust grains using surface science techniques, few have explored the formation of more complex molecules. A small number of these reactions produce molecules that remain on the surface of interstellar dust grains and, over time, lead to the formation of icy mantles. The most abundant of these species within the ice is H2O and is of particular interest as the observed molecular abundance cannot be accounted for using gas-phase chemistry alone. This article provides a brief introduction to the astronomical implications and motivations behind this research and the requirement for a new dual atomic beam ultrahigh vacuum (UHV) system. Further details of the apparatus design, characterisation, and calibration of the system are provided along with preliminary data from atomic O and O2 beam dosing on bare silica substrate and subsequent temperature programmed desorption measurements. The results obtained in this ongoing research may enable more chemically accurate surface formation mechanisms to be deduced for this and other species before simulating the kinetic data under interstellar conditions.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
Rosu-Finsen, A
Lasne, J
Collings, MP
McCoustra, MRS
Date : 2015
DOI : 10.1063/1.4919657
Copyright Disclaimer : Review of Scientific Instruments 86, 055103 (2015); doi: 10.1063/1.4919657. Copyright 2015 AIP Publishing.
Depositing User : Melanie Hughes
Date Deposited : 23 Aug 2017 13:28
Last Modified : 16 Jan 2019 18:55

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800