A large-volume gas cell for high-energy X-ray reflectivity investigations of interfaces under pressure

J Synchrotron Radiat. 2011 Mar;18(Pt 2):251-6. doi: 10.1107/S0909049510052106. Epub 2011 Jan 26.


A cell for the investigation of interfaces under pressure is presented. Given the pressure and temperature specifications of the cell, P ≤ 100 bar and 253 K ≤ T ≤ 323 K, respectively, high-energy X-rays are required to penetrate the thick Al(2)O(3) windows. The CH(4)(gas)/H(2)O(liquid) interface has been chosen to test the performance of the new device. The measured dynamic range of the high-energy X-ray reflectivity data exceeds 10(-8), thereby demonstrating the validity of the entire experimental set-up.