Demonstration of 0.75 Gbar planar shocks in x-ray driven colliding foils

Cauble, R.; Phillion, D. W.; Hoover, T.J.; Holmes, N. C.; Kilkenny, J. D.; Lee, R.W.

doi:10.1103/physrevlett.70.2102

Cited by 164 publications

(89 citation statements)

References 14 publications

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“…Using this technique, it is very easy to synchronize the electronic measurement devices and timing of the shock compression with very high accuracy (nanoseconds) [5,[29][30][31][32][33]. In addition, ultrahigh pressures above 1 TPa can be achieved using an intense laser pulse [34][35][36][37][38][39].…”

Section: Laser Shock Compressionmentioning

confidence: 99%

Structural Dynamics of Materials under Shock Compression Investigated with Synchrotron Radiation

Ichiyanagi

Nakamura

2016

Metals

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Abstract:Characterizing material dynamics in non-equilibrium states is a current challenge in material and physical sciences. Combining laser and X-ray pulse sources enables the material dynamics in non-equilibrium conditions to be directly monitored. In this article, we review our nanosecond time-resolved X-ray diffraction studies with 100-ps X-ray pulses from synchrotron radiation concerning the dynamics of structural phase transitions in non-equilibrium high-pressure conditions induced by laser shock compression. The time evolution of structural deformation of single crystals, polycrystals, and glass materials was investigated. In a single crystal of cadmium sulfide, the expected phase transition was not induced within 10 ns at a peak pressure of 3.92 GPa, and an over-compressed structure was formed. In a polycrystalline sample of Y 2 O 3 stabilized tetragonal zirconia, reversible phase transitions between tetragonal and monoclinic phases occur within 20 ns under laser-induced compression and release processes at a peak pressure of 9.8 GPa.In polycrystalline bismuth, a sudden transition from Bi-I to Bi-V phase occurs within approximately 5 ns at 11 GPa, and sequential V-III-II-I phase transitions occur within 30 ns during the pressure release process. In fused silica shocked at 3.5 GPa, an intermediate-range structural change in the nonlinear elastic region was observed.

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Section: Laser Shock Compressionmentioning

confidence: 99%

Structural Dynamics of Materials under Shock Compression Investigated with Synchrotron Radiation

Ichiyanagi

Nakamura

2016

Metals

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“…Twenty years after this experiment, the Nova laser from Livermore created a pressure of 750 ± 200 Mbar [9] . This was achieved in a collision between two gold foils, Correspondence to: Shalom Eliezer, Nuclear Fusion Institute, C. Jose Gutierrez Abascal 2, Madrid 28006, Spain.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast ignition with relativistic shock waves induced by high power lasers

Eliezer

Nissim²,

Pinhasi³

et al. 2014

High Pow Laser Sci Eng

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In this paper we consider laser intensities greater than 10 16 W cm −2 where the ablation pressure is negligible in comparison with the radiation pressure. The radiation pressure is caused by the ponderomotive force acting mainly on the electrons that are separated from the ions to create a double layer (DL). This DL is accelerated into the target, like a piston that pushes the matter in such a way that a shock wave is created. Here we discuss two novel ideas. Firstly, the transition domain between the relativistic and non-relativistic laser-induced shock waves. Our solution is based on relativistic hydrodynamics also for the above transition domain. The relativistic shock wave parameters, such as compression, pressure, shock wave and particle flow velocities, sound velocity and rarefaction wave velocity in the compressed target, and temperature are calculated. Secondly, we would like to use this transition domain for shockwave-induced ultrafast ignition of a pre-compressed target. The laser parameters for these purposes are calculated and the main advantages of this scheme are described. If this scheme is successful a new source of energy in large quantities may become feasible.

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“…High-power laser systems have been used to accelerate thin sheets to velocities above 10 km/s to produce square-shaped shock waves without the pre-heating of targets [e.g., [1][2][3][4][5][6][7][8][9][10][11]. Since, for planetary interest, the impacts of projectiles with an aspect ratio of ∼1 at velocities higher than ∼10 km/s are highly desirable, we have developed a laser-gun, which can accelerate aluminium (Al) spheres to velocities higher than 10 km/s [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Flyer acceleration experiments using high-power laser

Kadono

Sakaiya

Hironaka

et al. 2013

EPJ Web of Conferences

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Abstract. Flyer acceleration technique using high-power lasers has several advantages such as the achieved velocities higher than 10 km/s and non-contamination to the products generated by impacts. In this study, we show that a high-power laser can achieve flyer velocities higher than 10 km/s up to 60 km/s using spherical projectiles with a diameter of 0.1 − 0.3 mm. We discuss the projectile condition during the flight based on the results of numerical simulations.

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Demonstration of 0.75 Gbar planar shocks in x-ray driven colliding foils

Cited by 164 publications

References 14 publications

Structural Dynamics of Materials under Shock Compression Investigated with Synchrotron Radiation

Structural Dynamics of Materials under Shock Compression Investigated with Synchrotron Radiation

Ultrafast ignition with relativistic shock waves induced by high power lasers

Flyer acceleration experiments using high-power laser

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