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Title: Time-resolved diffraction of shock-released SiO 2 and diaplectic glass formation

Understanding how rock-forming minerals transform under shock loading is critical for modeling collisions between planetary bodies, interpreting the significance of shock features in minerals and for using them as diagnostic indicators of impact conditions, such as shock pressure. To date, our understanding of the formation processes experienced by shocked materials is based exclusively on ex situ analyses of recovered samples. Formation mechanisms and origins of commonly observed mesoscale material features, such as diaplectic (i.e., shocked) glass, remain therefore controversial and unresolvable. Here in this paper we show in situ pump-probe X-ray diffraction measurements on fused silica crystallizing to stishovite on shock compression and then converting to an amorphous phase on shock release in only 2.4 ns from 33.6 GPa. Recovered glass fragments suggest permanent densification. These observations of real-time diaplectic glass formation attest that it is a back-transformation product of stishovite with implications for revising traditional shock metamorphism stages.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [3] ;  [4] ;  [2] ;  [5] ;  [6] ;  [7]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. Center for High Pressure Science and Technology Advanced Research, Shanghai (China); Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Synergetic Consortium (HPSync)
  6. Friedrich Schiller Univ., Jena (Germany). Inst. fur Geowissenschaften
  7. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States)
Publication Date:
Report Number(s):
LA-UR-17-23638
Journal ID: ISSN 2041-1723; PII: 1791; TRN: US1800115
Grant/Contract Number:
AC02-76SF00515; AC02-05CH11231; AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1410511
Alternate Identifier(s):
OSTI ID: 1411351

Gleason, A. E., Bolme, C. A., Lee, H. J., Nagler, B., Galtier, E., Kraus, R. G., Sandberg, R., Yang, W., Langenhorst, F., and Mao, W. L.. Time-resolved diffraction of shock-released SiO2 and diaplectic glass formation. United States: N. p., Web. doi:10.1038/s41467-017-01791-y.
Gleason, A. E., Bolme, C. A., Lee, H. J., Nagler, B., Galtier, E., Kraus, R. G., Sandberg, R., Yang, W., Langenhorst, F., & Mao, W. L.. Time-resolved diffraction of shock-released SiO2 and diaplectic glass formation. United States. doi:10.1038/s41467-017-01791-y.
Gleason, A. E., Bolme, C. A., Lee, H. J., Nagler, B., Galtier, E., Kraus, R. G., Sandberg, R., Yang, W., Langenhorst, F., and Mao, W. L.. 2017. "Time-resolved diffraction of shock-released SiO2 and diaplectic glass formation". United States. doi:10.1038/s41467-017-01791-y. https://www.osti.gov/servlets/purl/1410511.
@article{osti_1410511,
title = {Time-resolved diffraction of shock-released SiO2 and diaplectic glass formation},
author = {Gleason, A. E. and Bolme, C. A. and Lee, H. J. and Nagler, B. and Galtier, E. and Kraus, R. G. and Sandberg, R. and Yang, W. and Langenhorst, F. and Mao, W. L.},
abstractNote = {Understanding how rock-forming minerals transform under shock loading is critical for modeling collisions between planetary bodies, interpreting the significance of shock features in minerals and for using them as diagnostic indicators of impact conditions, such as shock pressure. To date, our understanding of the formation processes experienced by shocked materials is based exclusively on ex situ analyses of recovered samples. Formation mechanisms and origins of commonly observed mesoscale material features, such as diaplectic (i.e., shocked) glass, remain therefore controversial and unresolvable. Here in this paper we show in situ pump-probe X-ray diffraction measurements on fused silica crystallizing to stishovite on shock compression and then converting to an amorphous phase on shock release in only 2.4 ns from 33.6 GPa. Recovered glass fragments suggest permanent densification. These observations of real-time diaplectic glass formation attest that it is a back-transformation product of stishovite with implications for revising traditional shock metamorphism stages.},
doi = {10.1038/s41467-017-01791-y},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {2017},
month = {11}
}