Plasma Jet Experiments Using LULI 2000 Laser Facility

Loupias, B.; Falize, É.; Kœnig, M.; Bouquet, S.; Ozaki, Norimasa; Benuzzi‐Mounaix, A.; Michaut, C.; Goahec, M. Rabec le; Nazarov, W.; Courtois, Christian; Aglitskiy, Y.; Faenov, A. Ya.; Pikuz, T. A.

doi:10.1007/s10509-006-9249-y

Cited by 7 publications

(3 citation statements)

References 15 publications

(12 reference statements)

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“…The analysis of propagation of the shock in the cone shows both an increase in speed and a higher foam temperature when reducing the density of the foam. To theoretically interpret the jet evolution in vacuum we have also developed self-similar solutions which provide a complete analytic solution of this hydrodynamic problem (Loupias et al 2007a, Falize et al 2008b. The radial evolution at a fixed temperature or density is obtained using the so-called 'Burgan-Feix-Munier' and it allows the estimation of the central temperature of the jet: T jet ∼ 15 eV for 100 mg cm −3 initial foam density target.…”

Section: Jet Parameters Measurementsmentioning

confidence: 99%

Propagation of laser-generated plasma jet in an ambient medium

Loupias

Falize

Gregory

et al. 2009

Plasma Phys. Control. Fusion

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In this work we present experimental research related to laboratory astrophysics using an intense laser. The goal of these experiments is to investigate some of the complex features of young stellar objects and astrophysical outflows, in particular the plasma jet interaction with the interstellar medium. The relevance of these experiments to astrophysics is measured through similarity criteria (scaling laws). These ensure the similarity between the astrophysical object and the laboratory provided that the dimensionless numbers are equivalent. Consequently, measurements of the plasma parameters are crucial to link laboratory research to astrophysics as they are needed for the determination of these dimensionless numbers. In this context, we designed experiments to generate plasma jets using an intense laser, and to study the evolution in vacuum and in an ambient medium.

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Section: Jet Parameters Measurementsmentioning

confidence: 99%

Propagation of laser-generated plasma jet in an ambient medium

Loupias

Falize

Gregory

et al. 2009

Plasma Phys. Control. Fusion

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“…Such radiographic diagnostics based on monochromatic x-ray imaging [16] has been advanced in recent years at the Naval Research Laboratory (NRL). It has been first used in our ICF-related hydrodynamic experiments on the NRL's Nike KrF laser [17], and later implemented at other facilities and applied for a variety of ICF/HEDP experiments, e. g., see [18,19] and references therein.…”

Section: Introductionmentioning

confidence: 99%

Classical and ablative Richtmyer–Meshkov instability and other ICF-relevant plasma flows diagnosed with monochromatic x-ray imaging

et al. 2008

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Abstract. In inertial confinement fusion (ICF) and high-energy density physics (HEDP), the most important manifestations of the hydrodynamic instabilities and other mixing processes involve lateral motion of the accelerated plasmas. In order to understand the experimental observations and to advance the numerical simulation codes to the point of predictive capability, it is critically important to accurately diagnose the motion of the dense plasma mass. The most advanced diagnostic technique recently developed for this purpose is the monochromatic x-ray imaging that combines large field of view with high contrast, high spatial resolution and large throughput, ensuring high temporal resolution at large magnification. Its application made it possible for the experimentalists to observe for the first time important hydrodynamic effects that trigger compressible turbulent mixing in laser targets, such as ablative Richtmyer-Meshkov (RM) instability, feedout, interaction of a RMunstable interface with rarefaction waves. It also helped to substantially improve the accuracy of diagnosing many other important plasma flows, ranging from laser-produced jets to electromagnetically driven wires in a Z-pinch, and to test various methods suggested for mitigation of the Rayleigh-Taylor instability. We will review the results obtained with the aid of this technique in ICF-HEDP studies at the Naval Research Laboratory and the prospects of its future applications.

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“…In work contemporary with this, S. Sublett employed a similar approach and some others in doctoral thesis work (Sublett 2007;Sublett et al 2007). Similar approaches have since been employed in experiments on the National Ignition Facility (Blue et al 2005) and in Europe (Loupias et al 2007a(Loupias et al , 2007b. In addition, two alternative approaches to jet formation have been developed.…”

mentioning

confidence: 99%

Design of jet-driven, radiative-blast-wave experiments for 10 kJ class lasers

Drake

Knauer

2008

Astrophys Space Sci

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We discuss the design of jet-driven, radiativeblast-wave experiments for a 10 kJ class pulsed laser facility. The astrophysical motivation is the fact that jets from Young Stellar Objects are typically radiative and that the resulting radiative bow shocks produce complex structure that is difficult to predict. To drive a radiative bow shock, the jet velocity must exceed the threshold for strong radiative effects. Using a 10 kJ class laser, it is possible to produce such a jet that can drive a radiative bow shock in gas that is dense enough to permit diagnosis by x-ray radiography. We describe the design and simulations of such experiments. The basic approach is to shock the jet material and then accelerate it through a collimating hole and into a Xe ambient medium. We identify issues that must be addressed through experimentation or further simulations in order to field successful experiments.

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Plasma Jet Experiments Using LULI 2000 Laser Facility

Cited by 7 publications

References 15 publications

Propagation of laser-generated plasma jet in an ambient medium

Propagation of laser-generated plasma jet in an ambient medium

Classical and ablative Richtmyer–Meshkov instability and other ICF-relevant plasma flows diagnosed with monochromatic x-ray imaging

Design of jet-driven, radiative-blast-wave experiments for 10 kJ class lasers

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