U.S. Department of EnergyOffice of Scientific and Technical Information
Luminescence from Edge Fracture in Shocked Lithium Fluoride Crystals
Abstract
Light emitted from a [100] lithium fluoride crystal was characterized under shock wave compression to 28GPa followed by complete stress release at the edges. The light was examined using time-gated optical spectrometry and imaging, time-resolved optical emission measurements, and hydrodynamic modeling. The shock arrival at the circumference of the crystal was delayed relative to the center so that the two regions could be studied at different times. The majority of the light emission originated when the shock waves released at the circumference of the crystal. Unlike previously reported results for shocked lithium fluoride, we found that the light spectrum is not strictly broad band, but has spectral lines associated with atomic lithium in addition to a broad band background. Also, the emission spectrum depends strongly on the gas surrounding the sample. Based on our observations, the line emission appears to be related to fracture of the lithium fluoride crystal from the shock wave releasing at the edges. Experimenters frequently utilize lithium fluoride crystals as transparent windows for observing shock compressed samples. Because of the experimental geometries used, the shock wave in such cases often reaches the circumference of the window at nearly the same moment as when it reaches themore »
- Authors:
-
- NSTec
- LANL
- NSTec, LANL
- Publication Date:
- Research Org.:
- Nevada Test Site (NTS), Mercury, NV (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1136767
- Report Number(s):
- DOE/NV/25946-1663
Journal ID: ISSN 0021-8979
- DOE Contract Number:
- DE-AC52-06NA25946
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 113; Journal Issue: 13; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- LiF, luminescence, lithium fluoride
Citation Formats
Turley, W. D., Stevens, G. D., Capelle, G. A., Grover, M., Holtkamp, D. B., LaLone, B. M., and Veeser, L. R. Luminescence from Edge Fracture in Shocked Lithium Fluoride Crystals. United States: N. p., 2013.
Web. doi:10.1063/1.4798576.
Turley, W. D., Stevens, G. D., Capelle, G. A., Grover, M., Holtkamp, D. B., LaLone, B. M., & Veeser, L. R. Luminescence from Edge Fracture in Shocked Lithium Fluoride Crystals. United States. https://doi.org/10.1063/1.4798576
Turley, W. D., Stevens, G. D., Capelle, G. A., Grover, M., Holtkamp, D. B., LaLone, B. M., and Veeser, L. R. 2013.
"Luminescence from Edge Fracture in Shocked Lithium Fluoride Crystals". United States. https://doi.org/10.1063/1.4798576.
@article{osti_1136767,
title = {Luminescence from Edge Fracture in Shocked Lithium Fluoride Crystals},
author = {Turley, W. D. and Stevens, G. D. and Capelle, G. A. and Grover, M. and Holtkamp, D. B. and LaLone, B. M. and Veeser, L. R.},
abstractNote = {Light emitted from a [100] lithium fluoride crystal was characterized under shock wave compression to 28GPa followed by complete stress release at the edges. The light was examined using time-gated optical spectrometry and imaging, time-resolved optical emission measurements, and hydrodynamic modeling. The shock arrival at the circumference of the crystal was delayed relative to the center so that the two regions could be studied at different times. The majority of the light emission originated when the shock waves released at the circumference of the crystal. Unlike previously reported results for shocked lithium fluoride, we found that the light spectrum is not strictly broad band, but has spectral lines associated with atomic lithium in addition to a broad band background. Also, the emission spectrum depends strongly on the gas surrounding the sample. Based on our observations, the line emission appears to be related to fracture of the lithium fluoride crystal from the shock wave releasing at the edges. Experimenters frequently utilize lithium fluoride crystals as transparent windows for observing shock compressed samples. Because of the experimental geometries used, the shock wave in such cases often reaches the circumference of the window at nearly the same moment as when it reaches the center of the sample-window interface. Light generated at the circumference could contaminate the measurement at the interface when this light scatters into the observed region. This background light may be reduced or avoided using experimental geometries which delay the arrival of the shock wave at the edges of the crystal.},
doi = {10.1063/1.4798576},
url = {https://www.osti.gov/biblio/1136767},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 13,
volume = 113,
place = {United States},
year = {2013},
month = {1}
}
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Works referencing / citing this record:
Comparison of Simultaneous Shock Temperature Measurements from Three Different Pyrometry Systems
journal, July 2019
- Ota, Thomas A.; Amott, Russell; Carlson, C. A.
- Journal of Dynamic Behavior of Materials, Vol. 5, Issue 4