Abstract's Details

The Dynamic Diamond Anvil Cell (dDAC): A Novel Device for Studying the Dynamic-Pressure Properties of Materials
Abstract ID	MAT-10
Presenter	William Evans
Presentation Type	Poster
Full Author List	W. J. Evans (1), C.-S. Yoo (2), G. W. Lee (3), H. Cynn (1), M. J. Lipp (1)
Affiliations	(1) Lawrence Livermore National Laboratory (2) Washington State University (3) Korea Research Institute of Standards and Science
Category	Materials Science
Abstract	We have developed a unique device, a dynamic diamond anvil cell (dDAC), which repetitively applies a time-dependent load/pressure profile to a sample. We are adapting this device to pulsed synchrotron radiation to time-resolve and take "snapshots" of pressure-induced transitions and phenomena. This capability allows studies of the kinetics of phase transitions and metastable phases at compression strain rates of up to 500 GPa/sec (0.16 s−1 for a metal). Our approach adapts electromechanical piezoelectric actuators to a conventional diamond anvil cell design, which enables precise specification and control of a time-dependent applied load/pressure. This capability addresses the sparsely studied regime of dynamic phenomena between static research and dynamic shock-driven experiments. We present an overview of our work and experimental measurements that can be made with this device.
Footnotes
Funding Acknowledgement	This work was performed under the auspices of the U.S. DOE by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48. Portions of this work were performed at HPCAT (Sector 16), Advanced Photon Source (APS), Argonne National Laboratory. Use of the HPCAT facility was supported by DOE-BES, DOE-NNSA (LLNL, and UNLV, CDAC) and NSF. Use of the APS was supported by DOE-BES, under Contract No. DE-AC02-06CH11357.