Abstract
A high-pressure optical cell with four windows and a manipulating rod for crystal rotation was designed and constructed from SNCM-8 steel. Brillouin scattering on a cylindrical NH4Cl single crystal was performed as a function of the crystal orientation angle. The angular dependence of the Brillouin shift and linewidth was measured both at 22.5°C, 0.1 MPa and -11.4°C, 0.21 GPa. The spacious sample chamber permitted the installation of optical components, enabling us to perform small-angle scattering experiments using this optical cell.
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