Cross sectional schematic view of in situ optical cell. A indicates the window assembly, B the assembled heating stage, C the threaded rod, D the mounted base, E the placement of the electrical feedthroughs, and F is the heating stage/electrical feedthrough assembly.
Isometric views of Al single powder sample holder (a) and Mo high-throughput sample holder (b).
Side view of the optical cell showing the sample stage and window region. G indicates the spring washers, H the top faceplate, I the two Au o-rings, J the sapphire window, K the copper gasket, L the heater's faceplate (with one set screw hole), M the Mo set screw, and N is the sample heater.
Schematic representation of the experimental geometry.
In situ Raman spectra of the Ca(BH4)2 as a function of temperature.
Raman profile of an as-milled powder and a sample that has been desorbed until only the Li2Mg(NH)2 Raman modes are visible and then rehydrogenated at 423 K and 8 MPa. Both Li4BN3H10 and Mg(NH2)2 have reformed, and the ratio of their Raman mode intensities is comparable to their as-milled state. Reprinted with permission from J. R. Hattrick-Simpers, J. E. Maslar, M. U. Niemann, C. Chiu, S. S. Srinivasan, E. K. Stefanakos, and L. A. Bendersky, Int. J. Hydrogen Energy 35, 6323 (2010). Copyright 2010, Elsevier.
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