Impact of extended preplasma on energy coupling in kilojoule energy relativistic laser interaction with cone wire targets relevant to fast ignition

Yabuuchi, T.; Mishra, R.; McGuffey, C.; Qiao, B.; Wei, M. S.; Sawada, Hiroshi; Sentoku, Y.; Ma, T.; Higginson, D. P.; Akli, K. U.; Batani, D.; Chen, H; Gizzi, L. A.; Key, M.H.; Mackinnon, A. J.; McLean, H. S.; Norreys, P.; Patel, P. K.; Stephens, R. B.; Ping, Yuan; Theobald, W.; Stoeckl, C.; Beg, F. N.

doi:10.1088/1367-2630/15/1/015020

Cited by 9 publications

(7 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the last years several groups have performed PIC studies of the effect of pre-plasma on the laser absorption and particle acceleration [45,49,[81][82][83][84][85][86][87][88][89]. It has been shown that an increase in the amount of pre-plasma not only places the absorption region further way from the core, leading to a reduced number of fast electrons reaching the core due to their divergence, but it also changes the dynamics of the laser propagation and the characteristics of the laser-generated fast electrons.…”

Section: Effects Of Pre-plasmamentioning

confidence: 99%

Laser–plasma interactions for fast ignition

Kemp¹,

Fiúza²,

Debayle³

et al. 2014

Nucl. Fusion

View full text Add to dashboard Cite

In the electron-driven fast-ignition (FI) approach to inertial confinement fusion, petawatt laser pulses are required to generate MeV electrons that deposit several tens of kilojoules in the compressed core of an imploded DT shell. We review recent progress in the understanding of intense laser–plasma interactions (LPI) relevant to FI. Increases in computational and modelling capabilities, as well as algorithmic developments have led to enhancement in our ability to perform multi-dimensional particle-in-cell simulations of LPI at relevant scales. We discuss the physics of the interaction in terms of laser absorption fraction, the laser-generated electron spectra, divergence, and their temporal evolution. Scaling with irradiation conditions such as laser intensity are considered, as well as the dependence on plasma parameters. Different numerical modelling approaches and configurations are addressed, providing an overview of the modelling capabilities and limitations. In addition, we discuss the comparison of simulation results with experimental observables. In particular, we address the question of surrogacy of today's experiments for the full-scale FI problem.

show abstract

Section: Effects Of Pre-plasmamentioning

confidence: 99%

Laser–plasma interactions for fast ignition

Kemp¹,

Fiúza²,

Debayle³

et al. 2014

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

“…In the last years several groups have performed PIC studies of the effect of preplasma on the laser absorption and particle acceleration [81,82,45,49,83,84,85,86,87,88,89]. It has been shown that an increase in the amount of pre-plasma not only places the absorption region further way from the core, leading to a reduced number of fast electrons reaching the core due to their divergence, but it also changes the dynamics of the laser propagation and the characteristics of the laser-generated fast electrons.…”

Section: Effects Of Pre-plasmamentioning

confidence: 99%

Laser-plasma interactions for fast ignition

Kemp,

Fiuza,

Debayle

et al. 2013

Preprint

View full text Add to dashboard Cite

In the electron-driven fast-ignition approach to inertial confinement fusion, petawatt laser pulses are required to generate MeV electrons that deposit several tens of kilojoules in the compressed core of an imploded DT shell. We review recent progress in the understanding of intense laser plasma interactions (LPI) relevant to fast ignition. Increases in computational and modeling capabilities, as well as algorithmic developments have led to enhancement in our ability to perform multi-dimensional particle-in-cell (PIC) simulations of LPI at relevant scales. We discuss the physics of the interaction in terms of laser absorption fraction, the laser-generated electron spectra, divergence, and their temporal evolution. Scaling with irradiation conditions such as laser intensity are considered, as well as the dependence on plasma parameters. Different numerical modeling approaches and configurations are addressed, providing an overview of the modeling capabilities and limitations. In addition, we discuss the comparison of simulation results with experimental observables. In particular, we address the question of surrogacy of today's experiments for the full-scale fast ignition problem.

show abstract

“…In this letter we propose a successful approach to create and to study WDM based on the use of wire targets irradiated by short-pulse high-intensity lasers. Let us notice that although wire targets have already been used in previous recent experiments, these experiments were really focusing on the aspect of fast electron propagation [33][34][35] (in particular in the "cone attached" configuration) or on the hydrodynamic evolution [36], while here we focus on the creation and investigation of WDM state.…”

mentioning

confidence: 99%

Generation and characterization of warm dense matter isochorically heated by laser-induced relativistic electrons in a wire target

Schönlein¹,

Boutoux²,

Pikuz³

et al. 2016

EPL

View full text Add to dashboard Cite

We studied the interaction of a high-intensity laser with mass-limited Ti-wires. The laser was focused up to 7 × 10 20 W/cm 2 , with contrast of 10 −10 to produce relativistic electrons. High-spatial-resolution X-ray spectroscopy was used to measure isochoric heating induced by hot electrons propagating along the wire up to 1 mm depth. For the first time it was possible to distinguish surface target regions heated by mixed plasma mechanisms from those heated only by the hot electrons that generate warm dense matter with temperatures up to 50 eV. Our results are compared to simulations that highlight both the role of electron confinement inside the wire and the importance of resistive stopping powers in warm dense matter.

show abstract

Impact of extended preplasma on energy coupling in kilojoule energy relativistic laser interaction with cone wire targets relevant to fast ignition

Cited by 9 publications

References 36 publications

Laser–plasma interactions for fast ignition

Laser–plasma interactions for fast ignition

Laser-plasma interactions for fast ignition

Generation and characterization of warm dense matter isochorically heated by laser-induced relativistic electrons in a wire target

Contact Info

Product

Resources

About