Radiative effects in radiative shocks in shock tubes

Drake, R. P.; Doss, F. W.; McClarren, Ryan G.; Adams, Marvin L.; Amato, Nancy; Bingham, Derek; Chou, Chuan-Chih; Stéfano, Carlos Di; Fidkowski, Krzysztof J.; Fryxell, B.; Gombosi, T. I.; Grosskopf, M.J.; Holloway, James Paul; Holst, B. van der; Huntington, C. M.; Karni, Smadar; Krauland, C.; Kuranz, Carolyn; Larsen, Edward W.; Leer, Bram van; Mallick, Bani K.; Marion, D.C.; Martin, Walter A.; Morel, Jim E.; Myra, E. S.; Nair, Vijayan N.; Powell, Kenneth G.; Rauchwerger, Lawrence; Roe, Philip L.; Rutter, Erica M.; Соколов, И. В.; Stout, Quentin F.; Torralva, Ben; Tóth, G.; Thornton, Katsuyo; Visco, A.

doi:10.1016/j.hedp.2011.03.005

Cited by 39 publications

(36 citation statements)

References 55 publications

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“…By extending the laser pulse duration to 3 ps, over 100 MeV high-flux proton beams can be obtained. Note that though the shock tube has been discussed in gasdynamic shock experiments [43][44][45], the influence of the high-Z solid tube on CSA has seldom been considered. Besides, the near critical plasma combining with a high density tube is attracting more interests in other scenarios [46,47].…”

Section: Introductionmentioning

confidence: 99%

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

Qiao

Shen

et al. 2019

New J. Phys.

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A scheme to achieve stable collisionless shock acceleration (CSA) of ions from a near-critical plasma by intense petawatt-picosecond laser pulses is proposed, where the plasma is confined in a high-Z solid tube. The application of the tube, on the one hand, restrains the plasma from transverse thermal expansion, helping to sustain sufficient density steepening required for shock formation and maintenance; on the other hand, due to the induced sheath field along its wall, pinches hot electrons for recirculation near laser axis, aiding to reach efficient plasma heating that is crucial to have a strong shock velocity for ion reflection. Consequently, stable ion CSA can be maintained for picosecond time scales, resulting in production of high-flux high-energy ion beams. Two-dimensional PIC simulations show that proton beams with narrow energy spread between 50 and 80 MeV and high flux with particle number about 10 12 are produced by a laser pulse at intensity 8.8×10 19 W cm −2 and duration 1 ps. By extending the pulse duration to 3 ps, over 100 MeV high-flux proton beams are obtained.

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Section: Introductionmentioning

confidence: 99%

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

Qiao

Shen

et al. 2019

New J. Phys.

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“…Similarly, a large number of radiative shock experiments have also used high-power lasers to ablate solid materials to act as pistons. These pistons are then able to drive shocks in a gas cell (e.g [15] and references therein) usually filled with low pressure xenon or low density foams [16,17]. By restricting the transverse width of the gas cell, the shocks act as quasi-one dimensional shocks and can interact with 'wall shocks' [15,18].…”

Section: Introductionmentioning

confidence: 99%

Counter-propagating radiative shock experiments on the Orion laser and the formation of radiative precursors

Clayson

Suzuki-Vidal

Лебедев

et al. 2017

High Energy Density Physics

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We present results from new experiments to study the dynamics of radiative shocks, reverse shocks and radiative precursors. Laser ablation of a solid piston by the Orion high-power laser at AWE Aldermaston UK was used to drive radiative shocks into a gas cell initially pressurised between 0.1 and 1.0 bar with different noble gases. Shocks propagated at 80 ± 10 km/s and experienced strong radiative cooling resulting in post-shock compressions of ×25 ± 2. A combination of X-ray backlighting, optical self-emission streak imaging and interferometry (multi-frame and streak imaging) were used to simultaneously study both the shock front and the radiative precursor. These experiments present a new configuration to produce counter-propagating radiative shocks, allowing for the study of reverse shocks and providing a unique platform for numerical validation. In addition, the radiative shocks were able to expand freely into a large gas volume without being confined by the walls of the gas cell. This allows for 3-D effects of the shocks to be studied which, in principle, could lead to a more direct comparison to astrophysical phenomena. By maintaining a constant mass density between different gas fills the shocks evolved with similar hydrodynamics but the radiative precursor was found to extend significantly further in higher atomic number gases (∼4 times further in xenon than neon). Finally, 1-D and 2-D radiative-hydrodynamic simulations are presented showing good agreement with the experimental data

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“…Accretion in cataclysmic variables exhibits more "extreme" parameters than the one of CTTSs: flow density of about 10 −7.5 g cm −3 , flow speed v f low ∼ 5000 km s −1 , magnetic field strength B ∼ 10−200 M G and a resulting post shock temperature of T ps ∼ 10 8 K [6,7]. We should add that filling the tube with a high Z gas (often used is Xe gas), offer the possibility to study radiative shocks, where radiations start to impact the hydrodynamic behavior [8,9].…”

Section: Introductionmentioning

confidence: 99%

Laser experiment for the study of accretion dynamics of Young Stellar Objects: Design and scaling

Revet

Khiar

Béard

et al. 2019

High Energy Density Physics

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Radiative effects in radiative shocks in shock tubes

Cited by 39 publications

References 55 publications

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

High-flux high-energy ion beam production from stable collisionless shock acceleration by intense petawatt-picosecond laser pulses

Counter-propagating radiative shock experiments on the Orion laser and the formation of radiative precursors

Laser experiment for the study of accretion dynamics of Young Stellar Objects: Design and scaling

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