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Propagation of intense laser beams is crucial for inertial confinement fusion, which requires precise beam control to achieve the compression and heating necessary to ignite the fusion reaction. The National Ignition Facility (NIF), where…

等离子体物理 · 物理学 2015-06-26 Pavel M. Lushnikov , Harvey A. Rose

Inertical Confinement Fusion configuration model is analized for direct ignition without an ablator. The compression of the target pellet is neglected and rapid volume ignition is achieved by a laser pulse, which is as short as the…

等离子体物理 · 物理学 2016-11-16 Susanne F. Spinnangr , István Papp , László P. Csernai

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…

等离子体物理 · 物理学 2015-06-16 A. J. Kemp , F. Fiuza , A. Debayle , T. Johzaki , W. B. Mori , P. K. Patel , Y. Sentoku , L. O. Silva

Inertial confinement fusion requires a constant search for the most effective materials for improving the efficiency of the compression of the capsule and of the laser-to-target energy transfer. Foams could provide a solution to these…

A completely rigorous first-principles calculation of the charged particle stopping power has recently been performed by Brown, Preston, and Singleton (BPS). This calculation is exact to leading and next-to-leading order in the plasma…

等离子体物理 · 物理学 2008-02-21 Robert L. Singleton

Significant progress has been made towards laser-driven fusion ignition via different schemes, including direct and indirect central ignition, fast ignition, shock ignition, and impact ignition schemes. However, to reach ignition…

等离子体物理 · 物理学 2016-06-09 W. -M. Wang , P. Gibbon , Z. -M. Sheng , Y. T. Li , J. Zhang

The measurement of peak laser intensities exceeding $10^{20} \text{W/cm$^2$}$ is in general a very challenging task. We suggest a simple method to accurately measure such high intensities up to about $10^{23} \text{W/cm$^2$}$, by colliding…

光学 · 物理学 2012-04-12 Omri Har-Shemesh , Antonino Di Piazza

The ignition at the National Ignition Facility (NIF) set off a global wave of research on the inertial fusion energy (IFE). However, IFE requires a necessary target gain G of 30-100, while it is hard to achieve the fusions at such high gain…

等离子体物理 · 物理学 2024-05-29 Zhan Sui , Ke Lan

The numerical results for the fuel target implosion are presented in order to clarify the target physics in ion beam inertial fusion. The numerical analyses are performed for a direct-driven ion beam target. In the paper the following…

等离子体物理 · 物理学 2015-04-09 Shigeo Kawata

A paradigm shift in the physics of laser-plasma interactions is approaching with the commissioning of multi-petawatt laser facilities world-wide. Radiation reaction processes will result in the onset of electron-positron pair cascades and,…

The neutron yields observed in inertial confinement fusion experiments for higher convergence ratios are about two orders of magnitude smaller than the neutron yields predicted by one-dimensional models, the discrepancy being attributed to…

核实验 · 物理学 2007-05-23 Silviu Olariu

Laser-plasma instabilities under ignition conditions for direct-drive inertial confinement fusion are studied using two-dimensional Particle-in-Cell simulations with a combination of in-plane (PP) and out-of-the-plane (SP) lasers. The…

等离子体物理 · 物理学 2024-09-10 S. H. Cao , M. J. Rosenberg , A. A. Solodov , H. Wen , C. Ren

As an alternative inertial confinement fusion scheme with predicted high energy gain and more robust designs, shock ignition requires a strong converging shock driven by a shaped pulse with a high-intensity spike at the end to ignite a…

An ultrarelativistic electron beam passing through an intense laser pulse emits radiation around its direction of propagation into a characteristic angular profile. Here we show that measurement of the variances of this profile in the…

等离子体物理 · 物理学 2020-07-01 T. G. Blackburn , E. Gerstmayr , S. P. D. Mangles , M. Marklund

We present the first experimental evidence of stimulated Raman re-scattering of a laser in plasma: The scattered light produced by the Raman instability is intense enough to scatter again through the same instability. Although never…

等离子体物理 · 物理学 2025-05-06 J. -R. Marquès , F. Pérez , P. Loiseau , L. Lancia , C. Briand , S. Depierreux , M. Grech , C. Riconda

Inertial Confinement Fusion is a promising option to provide massive, clean, and affordable energy for mankind in the future. The present status of research and development is hindered by hydrodynamical instabilities occurring at the…

等离子体物理 · 物理学 2018-10-17 L. P. Csernai , N. Kroo , I. Papp

We report a new configuration and theoretical approach for the study of the incoherent and coherent combination of Gaussian laser beams which allows us to calculate the combined intensity at every point in space, this new approach consists…

光学 · 物理学 2024-06-27 Hocine Djellout , Djillali Djellout

Fast ignition is an alternative concept of laser fusion in which the task of compressing the fusion pellet to supersolid densities is accomplished by the conventional high energy nanosecond glass lasers and the task of igniting the…

等离子体物理 · 物理学 2018-04-23 Atul Kumar , Chandrasekhar Shukla , Predhiman Kaw , Amita Das

The National Ignition Facility laser focuses 1.8 Mega-joules of ultraviolet light (wavelength 351 nano-meters) from 192 beams into a 600-micro-meter-diameter volume. Effective use of this output in target experiments requires that the power…

仪器与探测器 · 物理学 2007-05-23 R. D. Demaret , R. D. Boyd , E. S. Bliss , A. J. Gates , J. R. Severyn

The propagation and energy coupling of intense laser beams in plasmas are critical issues in laser-driven inertial confinement fusion. Applying magnetic fields to such a setup has been evoked to enhance fuel confinement and heating, and…

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