Abstract

We have designed a portable pressure controller module to tune compression rates and maximum pressures attainable in a standard gas-membrane diamond anvil cell (DAC). During preliminary experiments, performed on zirconium (Zr) metal sample, pressure jumps of up to 80 GPa were systematically obtained in less than 0.2s (resulting in compression rate of few GPa/s up to more than 400 GPa/s). In-situ x-ray diffraction and electrical resistance measurements were performed simultaneously during this rapid pressure increase to provide the first time resolved data on α → ω → β structural evolution in Zr at high pressures. Direct control of compression rates and peak pressures, which can be held for prolonged time, allows for investigation of structural evolution and kinetics of structural phase transitions of materials under previously unexplored compression rate-pressure conditions that bridge traditional static and shock/dynamic experimental platforms.

Details

Title
Time-resolved x-ray diffraction and electrical resistance measurements of structural phase transitions in zirconium
Author
Velisavljevic, N 1 ; Sinogeikin, S 2 ; Saavedra, R 1 ; Chellappa, R S 1 ; Rothkirch, A 3 ; Dattelbaum, D M 1 ; Konopkova, Z 3 ; H-P Liermann 3 ; Bishop, M 4 ; Tsoi, G M 4 ; Vohra, Y K 4 

 Los Alamos National Laboratory, Los Alamos, NM, USA 
 HPCAT, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL, USA 
 Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany 
 Department of Physics, University of Alabama at Birmingham, Birmingham, AL, USA 
Publication year
2014
Publication date
May 2014
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576628272
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.