How much laser power can propagate through fusion plasma?
| Autor: | Harvey A. Rose, Pavel M. Lushnikov |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Fusion
Materials science business.industry FOS: Physical sciences Pattern Formation and Solitons (nlin.PS) Plasma Nonlinear Sciences - Chaotic Dynamics Condensed Matter Physics Nonlinear Sciences - Pattern Formation and Solitons Physics - Plasma Physics Plasma Physics (physics.plasm-ph) Optics Nuclear Energy and Engineering Physics::Plasma Physics Ionization Physics::Accelerator Physics Nuclear fusion Laser power scaling Chaotic Dynamics (nlin.CD) National Ignition Facility business Inertial confinement fusion Beam (structure) Physics - Optics Optics (physics.optics) |
| Zdroj: | Plasma Physics and Controlled Fusion. 48:1501-1513 |
| ISSN: | 1361-6587 0741-3335 |
| Popis: | 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 fusion will be attempted, is now under construction. Control of intense beam propagation may be ruined by laser beam self-focusing. We have identified the maximum laser beam power that can propagate through fusion plasma without significant self-focusing and have found excellent agreement with recent experimental data, and suggest a way to increase that maximum by appropriate choice of plasma composition with implication for NIF designs. Our theory also leads to the prediction of anti-correlation between beam spray and backscatter and suggests the indirect control of backscatter through manipulation of plasma ionization state or acoustic damping. Comment: 15 pages, 4 figures, submitted to Plasma Physics and Controlled Fusion |
| Databáze: | OpenAIRE |
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