Laser Mégajoule irradiation uniformity for direct drive

Autor:	B. Canaud, J. L. Bocher, N. Dague, X. Fortin
Rok vydání:	2002
Předmět:	Physics business.industry Context (language use) Condensed Matter Physics Laser law.invention Optics law Irradiation business Inertial confinement fusion Intensity (heat transfer) Laser beams Beam (structure) Laser Mégajoule
Zdroj:	Physics of Plasmas. 9:4252-4260
ISSN:	1089-7674 1070-664X
DOI:	10.1063/1.1504102
Popis:	In the context of the direct-drive Laser-Megajoule (LMJ) fusion-research program, the characteristic long-wavelength nonuniformities produced by irradiating a pellet with multiple overlapping laser beams are studied with or without imperfections coming from power imbalance and pointing errors. The intensity profiles are modeled by super-Gaussian shapes. The beam pattern which minimizes the intrinsic LMJ nonuniformity is determined. It is shown the LMJ beam placement creates untractable nonuniformities from even modes. The laser imperfections create odd and low modes of nonuniformity which can dominate the even modes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4c27dea69d6e66bbb9b6c113f9e08a65 https://doi.org/10.1063/1.1504102 Zobrazit plný text záznamu