New target designs for direct-drive ICF
| Autor: | Jill P. Dahlburg, T. Lehecka, M. Klapisch, Andrew J. Schmitt, John H. Gardner, S. P. Obenschain, Denis Colombant, Stephen E. Bodner, Avraham Bar-Shalom, Lee Phillips |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Laser and Particle Beams. 17:225-235 |
| ISSN: | 1469-803X 0263-0346 |
| DOI: | 10.1017/s0263034699172082 |
| Popis: | We describe two approaches to the design of a direct-drive high-gain pellet for inertial confinement fusion reactors that has enhanced stability due to the reduction in the Rayleigh-Taylor growth rate and enhanced thermal smoothing of laser imprint. The first design incorporates an overcoat containing a high-Z element that radiatively heats the ablator during the foot of the laser pulse. The second incorporates a very low density foam ablator that is compressed by a series of transmitted and reflected shocks. Both designs enhance thermal smoothing by developing a very long density scale length and high electron densities in the ablator blowoff. |
| Databáze: | OpenAIRE |
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