In order to investigate the reactants involved in a reaction between a gas and a solid by means of X-ray absorption spectroscopy an apparatus is provided which comprises, within a measuring chamber (2), a sample holder (23) for holding a sample (24) of the solid, means for forming an atmosphere of the...http://www.google.co.uk/patents/US6212253?utm_source=gb-gplus-sharePatent US6212253 - Apparatus and method for X-ray absorption spectroscopy
