G N Chesnut et al 2006 J. Phys.: Condens. Matter 18 S1083 doi:10.1088/0953-8984/18/25/S15
G N Chesnut, D Schiferl, B D Streetman and W W Anderson
Show affiliationsWe have designed a new diamond-anvil cell capable of radial x-ray diffraction to pressures of a few hundred GPa. The diffraction geometry allows access to multiple angles of Ψ, which is the angle between each reciprocal lattice vector g(hkl) and the compression axis of the cell. At the 'magic angle', Ψ≈54.7°, the effects of deviatoric stresses on the interplanar spacings, d(hkl), are significantly reduced. Because the systematic errors, which are different for each d(hkl), are significantly reduced, the crystal structures and the derived equations of state can be determined reliably. At other values of Ψ, the effects of deviatoric stresses on the diffraction pattern could eventually be used to determine elastic constants.
62.50.-p High-pressure effects in solids and liquids
Issue 25 (28 June 2006)
Received 14 January 2006, in final form 20 March 2006
Published 8 June 2006
G N Chesnut et al 2006 J. Phys.: Condens. Matter 18 S1083
Ho-kwang Mao et al 2006 J. Phys.: Condens. Matter 18 S963
C-T Liang et al 2004 J. Phys.: Condens. Matter 16 1095
M J Fernée et al 2003 Nanotechnology 14 991
M J Fernée et al 2004 Nanotechnology 15 16
L M Kettle et al 2004 J. Phys.: Condens. Matter 16 1011
P H Thomas 1952 Br. J. Appl. Phys. 3 385
A M Akulshin et al 2003 J. Opt. B: Quantum Semiclass. Opt. 5 S479
Paul M Alsing et al 2004 J. Opt. B: Quantum Semiclass. Opt. 6 S834
D Boley and G H Golub 1987 Inverse Problems 3 595