Theory of fast electron transport for fast ignition
نویسندگان
چکیده
منابع مشابه
Visualizing fast electron energy transport into laser-compressed high-density fast-ignition targets
Recent progress in kilojoule-scale high-intensity lasers has opened up new areas of research in radiography, laboratory astrophysics, high-energy-density physics, and fast-ignition (FI) laser fusion. FI requires e cient heating of pre-compressed high-density fuel by an intense relativistic electron beam produced from laser–matter interaction. Understanding the details of electron beam generatio...
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The first results of an experimental campaign are reported in which it is intended to demonstrate whether it is possible for the fast electron beam (produced at irradiances in excess of 1019 Wcm−2μm2) to be artificially collimated even when the beam enters the target with a large divergence angle. The artificial collimation occurs because of a pre-generated magnetic field that is produced by a ...
متن کاملStudy of electron and proton isochoric heating for fast ignition
Isochoric heating by electrons has been measured in the two limiting cases of small area thin foils with dominant refluxing and cone-long-wire geometrywith negligible refluxing in thewire. Imaging ofCuK fluorescence, crystal x-ray spectroscopy of Cu K shell emission, and XUV imaging at 68eV and 256eV are discussed. Laser power on target was typically 0.5PW in 0.7ps. Heating by focused proton be...
متن کاملThree-dimensional fast electron transport for ignition-scale inertial fusion capsules
Three-dimensional (3D) hybrid PIC simulations are presented to study electron energy transport and deposition in a full-scale fast ignition configuration. Multi-prong core heating close to ignition is found when a few GA, few PW beam is injected. Resistive beam filamentation in the corona seeds the 3D current pattern that penetrates the core. Ohmic heating is important in the low-density corona...
متن کاملMagnetically assisted fast ignition.
Fast ignition (FI) is investigated via integrated particle-in-cell simulation including both generation and transport of fast electrons, where petawatt ignition lasers of 2 ps and compressed targets of a peak density of 300 g cm(-3) and areal density of 0.49 g cm(-2) at the core are taken. When a 20 MG static magnetic field is imposed across a conventional cone-free target, the energy couplin...
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ژورنال
عنوان ژورنال: Nuclear Fusion
سال: 2014
ISSN: 0029-5515,1741-4326
DOI: 10.1088/0029-5515/54/5/054003