Uniform multimegabar shock waves in solids driven by laser-generated thermal radiation

Löwer, Th.; Sigel, R.; Eidmann, K.; Földeş, I; Hüller, S.; Massen, J.; Tsakiris, G. D.; Witkowski, S.; Preuss, W.; Nishimura, Hiroaki; Shiraga, H.; Kato, Yoshiaki; Nakai, S.; Endo, Tamio

doi:10.1103/physrevlett.72.3186

Cited by 133 publications

(27 citation statements)

References 17 publications

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“…7,8,11,12 The experiments discussed here differ in several important regards from previous work. In all earlier experiments, great care was taken to produce shocks with minimal preheating of the solid sample prior to shock arrival.…”

Section: Experimental Setup For Validation Experimentsmentioning

confidence: 82%

Experimental validation of a diagnostic technique for tuning the fourth shock timing on National Ignition Facility

et al. 2010

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Capsule implosions on the National Ignition Facility (NIF) [Lindl et al., Phys. Plasmas 11, 339 (2004)] will be driven with a carefully tailored sequence of four shock waves that must be timed to very high precision in order to keep the fuel on a low adiabat. The Hohlraum conditions present during the first three shocks allow for a very accurate and direct diagnosis of the strength and timing of each individual shock by velocity interferometry. Experimental validation of this diagnostic technique on the OMEGA Laser Facility [Boehly et al., Opt. Commun. 133, 495 (1997)] has been reported in [Boehly et al., Phys. Plasmas 16, 056302 (2009)]. The Hohlraum environment present during the launch and propagation of the final shock, by contrast, is much more severe and will not permit diagnosis by the same technique. A new, closely related technique has been proposed for measuring and tuning the strength and timing of the fourth shock. Experiments to test this technique under NIF-relevant conditions have also been performed on OMEGA. The result of these experiments and a comparison to numerical simulations is presented, validating this concept.

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Section: Experimental Setup For Validation Experimentsmentioning

confidence: 82%

Experimental validation of a diagnostic technique for tuning the fourth shock timing on National Ignition Facility

et al. 2010

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“…In previous experimental investigations, target preheating has been measured by optical emission [17][18][19][20][21][22] and reflections at the rear surface 18,21,[23][24][25][26] with both direct drive 17,20-25 and indirect-drive 18,19,26 configurations. However, there is no experimental work on the target preheating for a condition directly associated with the nonlocal electron heat transport.…”

Section: Introductionmentioning

confidence: 99%

Measurement of preheating due to radiation and nonlocal electron heat transport in laser-irradiated targets

et al. 2010

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This paper reports an experimental study on preheating of laser-irradiated targets. We performed temperature measurements at the rear surface of laser-irradiated targets under conditions of two different laser wavelengths ͑0.35 or 0.53 m͒ and several intensities ͑2 ϫ 10 13 -1ϫ 10 14 W / cm 2 ͒ in order to verify an effect of radiation and nonlocal electron heat transport. The preheating temperature was evaluated by observing self-emission, reflectivity, and expansion velocity at the rear surface of planar polyimide foils. The experimental results show that the x-ray radiation is dominant for preheating for 0.35-m laser irradiation, but contribution of nonlocal electron heat transport is not negligible for 0.53-m laser irradiation conditions.

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“…la). The second [8] uses thermal x-rays from laser-heated cavities to generate shocks (indirect laser drive where the laser beam is focused onto a small cavity through an entrance holesee Fig. lb).…”

Section: Shock Production With Lasersmentioning

confidence: 99%

Measuring the Equation of State with Lasers

Batani¹,

Kœnig²,

Löwer³

et al. 1996

Europhys. News

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Uniform multimegabar shock waves in solids driven by laser-generated thermal radiation

Cited by 133 publications

References 17 publications

Experimental validation of a diagnostic technique for tuning the fourth shock timing on National Ignition Facility

Experimental validation of a diagnostic technique for tuning the fourth shock timing on National Ignition Facility

Measurement of preheating due to radiation and nonlocal electron heat transport in laser-irradiated targets

Measuring the Equation of State with Lasers

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