NEUTRONS. Build EAR user/student community and enhance access to neutron facilities Coordinate activities within COMPRES - high P-T calibrations, cell development, etc. Coordinate with global high-P neutron community Support new EAR initiatives at neutron facilities.
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COMPRES: Budget for Neutrons
* funds not available until August 2002
RJ Angel, U. Bismayer, W.G. Marshall (2003) Dynamism or Disorder at High Pressures? Eos Trans. AGU, 83: F620.
RJ Angel, U. Bismayer, W.G. Marshall (2003)Local and long range order in ferroelastic lead phosphate at high pressure, Acta Cryst C, submitted.
WL Mao, Y Zhao, R J Hemley, H Mao (2002) Hydrogen Storage in Clathrate Hydrate. Trans. AGU, 83:F620-21.
NeutronsIn solid stateChemistry and the EarthSciencesToday and tomorrow(March 12–16, 2003)Co-chairs: A. Wilkinson (Georgia Tech), N. Ross (Virginia Tech)
The purpose of the SHUG is to:
Membership in the SHUG is open to all users and potential users of the various neutron facilities at the SNS and HFIR and scientists and engineers engaged in the operation and development of these facilities.
A High Pressure Diffractometer for the Spallation Neutron Source
!!!! June 13, 2003: Fomal approval of DOE funding!!!!
Disordered materials diffractometer
Magnetic neutron diffraction under pressures up to 43 GPa. Study of the EuX and GdX compounds Goncharenko I, Mirebeau I, Ochiai AHYPERFINE INTERACTIONS 128: 225-244 2000 High pressure diffractometer <<MICRO>> at the Laboratoire Léon Brillouin (reactor) Samples 0.01-1 mm3
Ices relevant to large moonsGanymede and Europa (Jupiter), Titan (Saturn), Triton (Neptune), Pluto
Significant fractions of ices (50% by mass)
Titan has a significant atmosphere (nitrogen and methane) Due to be explored by Cassini/Huygens 2004
For Titan ammonia hydrates and methane hydrates are important phases