Measurement of the shock-heated melt curve of lead using pyrometry and reflectometry

Partouche-Sebban, D.; Pélissier, J.; Abeyta, F.; Anderson, William W.; Byers, Mark; Dennis-Koller, Darcie; Esparza, J. S.; Hixson, R. S.; Holtkamp, D. B.; Jensen, Brian J.; King, J.C.; Rigg, P. A.; Rodriguez, P.; Shampine, D. L.; Stone, Joseph B.; Westley, D. T.; Borror, S. D.; Kruschwitz, Craig

doi:10.1063/1.1849436

Cited by 46 publications

(14 citation statements)

References 12 publications

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“…We do not know whether the glue transmission changes with shock stress in the IR. It is known to remain unchanged at visible wavelengths 11 (where, however, absorption is negligible, even in unshocked glue). A change in glue transmission at SBO would appear in the detected signal as a change proportional to the incident light.…”

Section: Uncertaintiesmentioning

confidence: 99%

Infrared emissivity of tin upon release of a 25 GPa shock into a lithium fluoride window

Turley

Holtkamp

Veeser

et al. 2011

Journal of Applied Physics

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Velocity correction and refractive index changes for [100] lithium fluoride optical windows under shock compression, recompression, and unloading Temperature and melting of laser-shocked iron releasing into an LiF window Phys. Plasmas 12, 060701 (2005); 10.1063/1.1896375Flexible electrochromic reflectance device based on tungsten oxide for infrared emissivity controlWe measured the emissivity of a tin sample at its interface with a lithium-fluoride window upon release of a 25 GPa shock wave from the tin into the window. Measurements were made over four wavelength bands between 1.2 and 5.4 lm. Thermal emission backgrounds from the tin, glue, and lithium fluoride were successfully removed from the reflectance signals. Emissivity changes for the sample, which was initially nearly specular, were small except for the longest wavelength band, where uncertainties were high because of poor signal-to-noise ratio at that wavelength. A thin glue layer, which bonds the sample to the window, was found to heat from reverberations of the shock wave between the tin and the lithium fluoride. At approximately 3.4 lm, the thermal emission from the glue was large compared to the tin, allowing a good estimate of the glue temperature from the thermal radiance. The glue appears to remain slightly colder than the tin, thereby minimizing heat conduction into or out of the tin immediately after the shock passage.

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Section: Uncertaintiesmentioning

confidence: 99%

Infrared emissivity of tin upon release of a 25 GPa shock into a lithium fluoride window

Turley

Holtkamp

Veeser

et al. 2011

Journal of Applied Physics

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“…Understanding the mechanism of the shock-induced luminescence from sapphire is significant for the measurement of shock temperature by optical radiation method [5]. In this work, we presented the optical emission from sapphire under shock compression.…”

Section: Introductionmentioning

confidence: 99%

Shock wave on materials

Cao

et al. 2014

Chin. Sci. Bull.

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Shock wave is associated with dynamic loading that can result in phase transition (PT), optical and mechanical property changing, and chemical reaction on materials. Here, we report recent progress about shockinduced PT of polycrystalline iron, the underlying mechanism of the optical emission from sapphire, and the synthesis from single-phase RuSi in the National Key Laboratory of Shock Wave and Detonation Physics. Results indicated that grain boundary (GB) could affect the PT pressure threshold and rate of iron, the pressure threshold decreases with decreasing GB defects, and the PT rate shows a variation with increasing GB size; wavelength-dependent optical emissivity (non-gray-body emission) would be generated that was not revealed previously for shocked sapphire, and the observed luminescence was from the shock-induced shear bands, but without superheating phenomenon; shock compression could be an effective way to synthesis Ru-Si nanocrystals, when the shock pressure was appropriate; and Ru-Si powder could completely transform to fine-grain structure CsCl-type RuSi at 40.4 GPa.

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“…The front and rear windows were bonded together with either AngstromBond 9110LV (a standard epoxy at Z) or Loctite 326 (a favored glue in pyrometry research [11] the sample is deposited on the interior surface of the front sapphire window; light passes through the bond holding the front and rear windows together during the measurement. Reverse reflectance measurements have the reflective sample deposited on the interior rear window surface so light does not pass through the glue during the measurement.…”

Section: Impact Experimentsmentioning

confidence: 99%

“…The first NSLS campaign took place September [11][12][13][14][15][16][17][18]2006. Figure 4.1 shows the optical layout used in this campaign.…”

Section: Campaign I (September 2006)mentioning

confidence: 99%

Characterizing the emissivity of materials under dynamic compression (final report for LDRD project 79877).

Dolan¹

2007

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Temperature measurements are crucial to equation of state development, but difficult to perform reliably. In the case of infrared pyrometry, a large uncertainty comes from the fact that sample emissivity (the deviation from a blackbody) is unknown. In this project, a method for characterizing the emissivity of shocked materials was developed. By coupling infrared radiation from the National Synchrotron Light Source to a gas gun system, broad spectrum emissivity changes were studied to a peak stress of 8 GPa. Emissivity measurements were performed on standard metals (Al, Cr, Cu, and Pt) as well as a high emissivity coating developed at Sandia.3

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Measurement of the shock-heated melt curve of lead using pyrometry and reflectometry

Cited by 46 publications

References 12 publications

Infrared emissivity of tin upon release of a 25 GPa shock into a lithium fluoride window

Infrared emissivity of tin upon release of a 25 GPa shock into a lithium fluoride window

Shock wave on materials

Characterizing the emissivity of materials under dynamic compression (final report for LDRD project 79877).

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