In situ measurement of gas-solid interactions in astrophysical dust & planetary analogues

S.P. Thompson; J.E. Parker; S.J. Day; A. Evans; C.C. Tang

doi:10.1051/eas/1258036

All issues

Volume 58 (2012)

EAS Publications Series, 58 (2012) 225-229

Abstract

Open Access

Issue		EAS Publications Series Volume 58, 2012 ECLA - European Conference on Laboratory Astrophysics


Page(s)		225 - 229
DOI		https://doi.org/10.1051/eas/1258036
Published online		13 February 2013

European Conference on Laboratory Astrophysics - ECLA C. Stehlé, C. Joblin and L. d’Hendecourt (eds) EAS Publications Series, 58 (2012) 225-229

In situ measurement of gas-solid interactions in astrophysical dust & planetary analogues

S.P. Thompson¹, J.E. Parker¹, S.J. Day¹^,2, A. Evans² and C.C. Tang¹

¹ Diamond Light Source, Chilton, Didcot, Oxon OX11 0DE, UK
² Astrophysics Group, Keele University, Staffs ST5 5BG, UK

Abstract

Facilities for studying gas-solid interactions on beamline I11 at the Diamond Light Source are described. Sample evolution in low and high gas pressure capillary cells (1 × 10^-7 to 100 bar) with non-contact cooling and heating (80 to 1273 K) can be monitored structurally (X-rays) and spectroscopically (Raman). First results on the dehydration of MgSO₄.7H₂O, the formation of CO₂ clathrate hydrate and the reaction of amorphous CaSiO₃ grains with CO₂ gas to form CaCO₃ are presented to demonstrate the application of these cells to laboratory investigations involving the processing of cosmic dust simulants and planetary materials analogues.