Hugoniot Elastic Limit of Single-Crystal Sodium Chloride

Murri, W. J.; Anderson, G.D.

doi:10.1063/1.1659452

Cited by 47 publications

(13 citation statements)

References 16 publications

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“…These measurements are consistent with similar MgO experiments performed by Stevens et al, 43 as well as the elastic-wave particle velocity measurements of other materials. [44][45][46] As shown in Figure 2(a), we do not observe a change in the apparent particle velocity as the elastic wave decays. This suggests that the refractive index of the elastic wave is linear in density or the variation in the refractive index with density is small.…”

Section: B Elastic-plastic Two-wave Structuresupporting

confidence: 53%

A novel approach to Hugoniot measurements utilizing transparent crystals

Fratanduono

Eggert

Akin

et al. 2013

Journal of Applied Physics

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A new absolute equation of state measurement technique is described and demonstrated measuring the shock state and the refractive index of MgO up to 226 GPa. This technique utilizes steady shock waves and the high-pressure transparency of MgO under dynamic shock compression and release. Hugoniot measurements performed using this technique are consistent with the previous measurements. A linear dependence of the shocked refractive index and density is observed up to 226 GPa, over a magnitude greater in pressure that previous studies. The transparency of MgO along the principal Hugoniot is higher than any other material reported to date. We observe a significant change in the refractive index of MgO as the Hugoniot elastic limit is exceeded due to the transition from uniaxial to hydrostatic strain. Measurements of the elastic-plastic two-wave structure in MgO indicate a nucleation time for plastic deformation. V C 2013 AIP Publishing LLC.

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Section: B Elastic-plastic Two-wave Structuresupporting

confidence: 53%

A novel approach to Hugoniot measurements utilizing transparent crystals

Fratanduono

Eggert

Akin

et al. 2013

Journal of Applied Physics

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“…The value of τ s was slightly larger in acrylic polymer than in the other materials, and τ s increased linearly with flyer thickness. Based on what is known about the shock response of salt, 37,40 such flyer impacts would be expected to produce a steady shock in salt, but in the other target materials the shocks most likely would not have enough time to develop steady-state 45 shock profiles.…”

Section: Energy Transfer From Flyer To Targetmentioning

confidence: 99%

“…The structure of shocks in these four well-characterized materials has been discussed extensively. Shocked salt has a simple fluid-like shock response, 37,40 but the other materials support shocks with more complicated multiple-wave structures. 15,41 Despite the complexity of shocks in the glasses, U p appeared constant in both borosilicate ( Fig.…”

Section: H Fully Supported Shocks In Transparent Targetsmentioning

confidence: 99%

Laser-driven flyer plates for shock compression science: Launch and target impact probed by photon Doppler velocimetry

Curtis

Банишев

Shaw

et al. 2014

Review of Scientific Instruments

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We investigated the launch and target impact of laser-driven Al flyer plates using photon Doppler velocimetry (PDV). We studied different flyer designs launched by laser pulses of different energies, pulse durations and beam diameters, that produced km s(-1) impacts with transparent target materials. Laser-launching Al flyers 25-100 μm thick cemented to glass substrates is usually thought to involve laser vaporization of a portion of the flyer, which creates many difficulties associated with loss of integrity and heating of the flyer material. However, in the system used here, the launch mechanism was surprising and unexpected: it involved optical damage at the glass/cement/flyer interface, with very little laser light reaching the flyer itself. In fact the flyers launched in this manner behaved almost identically to multilayer flyers that were optically shielded from the laser pulses and insulated from heat generated by the pulses. Launching flyers with nanosecond laser pulses creates undesirable reverberating shocks in the flyer. In some cases, with 10 ns launch pulses, the thickest flyers were observed to lose integrity. But with stretched 20 ns pulses, we showed that the reverberations damped out prior to impact with targets, and that the flyers maintained their integrity during flight. Flyer impacts with salt, glass, fused silica, and acrylic polymer were studied by PDV, and the durations of fully supported shocks in those media were determined, and could be varied from 5 to 23 ns.

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“…1 It is often observed that the elastic-wave front decays with distance and a region of stress relaxation develops behind the elastic-wave front. 2,3 An examination of these structured waves can provide insight into the physical mechanisms governing elastic-plastic deformation and material strength under dynamic loading. [4][5][6][7] For example, past studies on LiF crystals have shown that the elastic wave decays with distance and the decay rate depends on many variables including the crystal orientation, 5 the applied stress, 8 the impurity concentration, 6 and clustering.…”

Section: Introductionmentioning

confidence: 99%