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Title: The equation of state of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one determined via in-situ optical microscopy and interferometry measurements

Abstract

Quasi-hydrostatic high-pressure equations of state (EOS) are typically determined, for crystalline solids, by measuring unit-cell volumes using x-ray diffraction (XRD) techniques. However, when characterizing low-symmetry materials with large unit cells, conventional XRD approaches may become problematic. To overcome this issue, we examined the utility of a “direct” approach toward determining high pressure material volume by measuring surface area and sample thickness using optical microscopy and interferometry (OMI), respectively. We have validated this experimental approach by comparing results obtained for 2,4,6-triamino-1,3,5-trinitrobenzene TATB with an EOS determined from synchrotron XRD measurements; and, a good match is observed. We have measured the high pressure EOS of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one (α-NTO) up to 28 GPa. No high-pressure XRD EOS data have been published on α-NTO, probably due to its complex crystal structure. The results of this study suggest that OMI is a reliable and versatile alternative for determining EOSs, especially when conventional methodologies are impractical.

Authors:
; ;  [1]
  1. Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, P.O. Box 808, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
22594576
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 119; Journal Issue: 13; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; CRYSTAL STRUCTURE; CRYSTALS; EQUATIONS OF STATE; INTERFEROMETRY; OPTICAL MICROSCOPY; PRESSURE RANGE MEGA PA 10-100; SOLIDS; SURFACE AREA; SURFACES; SYMMETRY; SYNCHROTRONS; TATB; THICKNESS; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Stavrou, Elissaios, Zaug, Joseph M., E-mail: zaug1@llnl.gov, Bastea, Sorin, and Crowhurst, Jonathan C. The equation of state of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one determined via in-situ optical microscopy and interferometry measurements. United States: N. p., 2016. Web. doi:10.1063/1.4945426.
Stavrou, Elissaios, Zaug, Joseph M., E-mail: zaug1@llnl.gov, Bastea, Sorin, & Crowhurst, Jonathan C. The equation of state of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one determined via in-situ optical microscopy and interferometry measurements. United States. doi:10.1063/1.4945426.
Stavrou, Elissaios, Zaug, Joseph M., E-mail: zaug1@llnl.gov, Bastea, Sorin, and Crowhurst, Jonathan C. Thu . "The equation of state of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one determined via in-situ optical microscopy and interferometry measurements". United States. doi:10.1063/1.4945426.
@article{osti_22594576,
title = {The equation of state of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one determined via in-situ optical microscopy and interferometry measurements},
author = {Stavrou, Elissaios and Zaug, Joseph M., E-mail: zaug1@llnl.gov and Bastea, Sorin and Crowhurst, Jonathan C.},
abstractNote = {Quasi-hydrostatic high-pressure equations of state (EOS) are typically determined, for crystalline solids, by measuring unit-cell volumes using x-ray diffraction (XRD) techniques. However, when characterizing low-symmetry materials with large unit cells, conventional XRD approaches may become problematic. To overcome this issue, we examined the utility of a “direct” approach toward determining high pressure material volume by measuring surface area and sample thickness using optical microscopy and interferometry (OMI), respectively. We have validated this experimental approach by comparing results obtained for 2,4,6-triamino-1,3,5-trinitrobenzene TATB with an EOS determined from synchrotron XRD measurements; and, a good match is observed. We have measured the high pressure EOS of 5-nitro-2,4-dihydro-1,2,4,-triazol-3-one (α-NTO) up to 28 GPa. No high-pressure XRD EOS data have been published on α-NTO, probably due to its complex crystal structure. The results of this study suggest that OMI is a reliable and versatile alternative for determining EOSs, especially when conventional methodologies are impractical.},
doi = {10.1063/1.4945426},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 13,
volume = 119,
place = {United States},
year = {2016},
month = {4}
}