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      Workshop Plan and More
Radial Diffraction Studies in DAC
       (Rheology in DAC)

            Haozhe Liu
           Breakout discussion group
                June 18, 2005
•   Jiuhua Chen (Stony Brook)
•   Shun-Ichiro Karato (Yale)
•   Atsushi Kubo (Princeton)
•   Quanzhong Guo (X17B3, NSLS)
•   Jingzhu Hu (X17C, NSLS)
•   Haozhe Liu (HPCAT, APS)
•   Zhenxian Liu (U2A, NSLS)
•   Hongbo Long (Stony Brook)
•   Yanzhang Ma (Texas Tech)
•   Sergio Speziale (UC Berkely)
                 Advisory Committee

Jiuhua Chen (State University of New York at Stony Brook)
Robert B. von Dreele (IPNS, Argonne National Laboratory)
Daniel Häusermann (HPCAT, Advanced Photon Source)
Russell J. Hemley (Geophysical Lab, Carnegie Institution of
Murli Manghnani (Hawaii Institute of Geophysics and
Ho-kwang Mao (Geophysical Lab, Carnegie Institution of
Malcolm McMahon (University of Edinburgh, UK)
Malcolm Nicol (UNLV High Pressure Science and
Engineering Center)
John Parise (State University of New York at Stony Brook)
Guoyin Shen (GSECARS, University of Chicago)
John S. Tse (SIMS, National Research Council of Canada)
Yanbin Wang (GSECARS, University of Chicago)
X-ray imaging of stress and strain of diamond, iron, and tungsten at megabar
Hemley RJ, Mao HK, Shen GY, Badro J, Gillet P, Hanfland M, Hausermann D
SCIENCE 276 (5316): 1242-1245 (1997)
The plastic deformation of iron at pressures of
the Earth's inner core
Wenk HR, Matthies S, Hemley RJ, Mao HK, Shu J
NATURE 405 (6790): 1044-1047 (2000)
Radial diffraction in DAC: elastic anisotropy, strain and
stress, yield strength, preferred orientation etc.

One key goal of the workshop:
Sharing the experience from experts in DAC radial
diffraction. DAC design, gasket optimization, sample
preparation, data collection and analysis.

Develop the challenging project of rheological studies:
Combining different heating methods with radial
      diffraction technique;
Gasket techniques: Be, (Kapton, amorphous boron,
      and epoxy), others;
Theoretical modeling and analysis improvement;
New techniques: rotational DAC and dynamic DAC.
         Benefit to COMPRES Community
1.   Pushing the technological frontier of rheology
     study in DAC;
2.   Broadening the COMPRES community access to
     the DAC radial diffraction.

The experts of DAC design, beamline scientists, structural refinement
experts, rheology experts and potential users will assemble together
to determine the way to coordinate the above efforts efficiently.

Infrastructure proposal: “Rheology in DAC” (tentative title) will be
submitted to COMPRES by a cooperative, multi-institutional team
based on the discussions and feedbacks in this workshop
Location: HPCAT, Advanced Photon Source, Argonne
National Laboratory

Time: 2-day workshop before November, 2005
Beamtime: 2-shift hand-on experiments at ID-B and
BM-D stations of HPCAT

Sponsor: COMPRES
Co-sponsor: HPCAT

Workshop Organizers:
Haozhe Liu (HPCAT/Carnegie Institution of Washington)
Rudy Wenk (UC Berkeley)
Thomas Duffy (Princeton University)
              Potential attendees as speakers in the workshop

1a. Radial diffraction studies in DAC.
William A. Bassett (Cornell University), “History, current status and future of DAC
    side diffraction”;
Arthur L. Ruoff (Cornell University), “Yield strength from DAC side diffraction”;
Anil Singh (National Aerospace Lab, India), “Modeling of stresses and strains of
    solids under static high pressure”;
Rudy Wenk (UC Berkeley), “Deformation, development of anisotropy, and
    quantitative Rietveld texture analysis from DAC radial diffraction”;
Thomas Duffy (Princeton University), “Strength, stain and stress from side
    diffraction in DAC’;
Sebastien Merkel (UC Berkeley), “Applications of DAC side diffraction techniques,
    and gasket optimization”;
Maddury Somayazulu (Geophysical Laboratory, Carnegie Institution), “Techniques
    and data analysis of DAC side diffraction”;
Abby Kavner (UC at LA), “Some new studies”
1b.New opportunities for the radial diffraction studies in DAC
Ho-kwang Mao (Geophysical Laboratory, Carnegie Institution), “Challenge of DAC
    radial diffraction techniques in Earth science”;
Gary Chesnut (Los Alamos National Lab), “Compressibility and structural
    refinement: magic angle approach in DAC”;
Yanzhang Ma (Texas Tech University), “Rotational DAC: opportunity of rheology
    study in routine DAC sep-up geometry”;
Choongshik Yoo (LLNL), “Opportunity of rheology studies under high PT conditions
    by dynamic DAC (d-DAC)”;
Russell J. Hemley (Geophysical Lab, Carnegie Institution), “Overview the
    applications of side diffraction in DAC to multi-Mbar pressure”;
Haozhe Liu (HPCAT), “DAC radial diffraction with heating capability by various
2a. Refinement and texture analysis under high pressure
Robert Dinnebier (Max Planck Institute, Stuttgart, Germany), “Non-routine structure
    determination from powders diffraction data at ambient and non-ambient
Yusheng Zhao (LANSCE, Los Alamos National Lab), “Structural refinement and
    preferred orientation from high pressure neutron data”;
2b.Rheology studies using large volume press
Don J. Weidner (Stony Brook University), “Effect of plastic deformation in
    polycrystalline and single crystal MgO from diffraction studies in D-DIA”;
Shun-ichiro Karato (Yale University), “Development of a rotational Drickamer
    apparatus for large-strain deformation experiments under high P-T conditions”;
Yanbin Wang (GSECARS, University of Chicago), “Combine the D-DIA with
    Drickamer-type anvils”.
The corresponding travel supports are estimated as following:

Students and junior scientists travel support:      $12,000
$500/person, expect to support 24 students in COMPRES community;

Invited speakers travel support:                        $8000
$500/person (domestic), 12 invited speakers.
$1000/person (international), 2 invited speakers.

Total Budget:                                           $20,000
Gary L. Kinsland, and William A. Bassett, Modification of the diamond cell for
measuring strain and the strength of materials at pressure up to 300 kilobar, Rev.
Sci. Instrum., 47, 130 (1976).

J. S. Weaver, T. Takahashi, and W. A. Bassett, Abstract in the Trans. AGU 53(4)
(April 1972).
Singh, A. K., Mao, H. K., Shu, J. & Hemley, R. J.
Estimation of single-crystal elastic moduli from polycrystalline x-ray diffraction at high
pressure: Applications to FeO and iron
Phys. Rev. Lett. 80, 2157-2160 (1998).

Duffy TS, Shen GY, Heinz DL, Shu JF, Ma YZ, Mao HK, Hemley RJ, Singh AK
Lattice strains in gold and rhenium under nonhydrostatic compression to 37 GPa
Phys. Rev. B 60 (22): 15063-15073 (1999).

Merkel S, Wenk H-R, Shu J, Shen G, Gillet P, Mao H-K, Hemley R J. Deformation of
MgO aggregates at pressures of the lower mantle
J. Geophys. Res. 107(B11), 2271, ECV3, 1–17 (2002).

Wenk H-R, Gillet P, Mao H-K, Hemley R J.
Deformation of polycrystalline iron up to 30 GPa and 1000K
Phys. Earth Panet. Int. 145, 239–251 (2004).

Merkel S, Yagi T.
X-ray transparent gasket for diamond anvil cell high pressure experiments
Rev. Sci. Instrum., 76, 046109 (2005).

Lin, J. F., J. Shu, H. K. Mao, R. J. Hemley, and G. Shen, Rev. Sci. Instrum.
74, 4732 (2003).

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