Illumination uniformity of a capsule directly driven by a laser facility with 32 or 48 directions of irradiation

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3455539· OSTI ID:21378071

Temporal, M ^[1]; Canaud, B; Laffite, S ^[2]; Le Garrec, B J ^[3]; Murakami, M ^[4]

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1. ETSIA, Universidad Politecnica de Madrid, 28040 Madrid (Spain)
2. CEA, DAM, DIF, F-91297 Arpajon (France)
3. CEA-CESTA, 15 Avenue des Sablieres, BP2, 33114 Le Barp (France)
4. Institute of Laser Engineering, Osaka University, Osaka 565-0871 (Japan)

The uniformity of the illumination of a spherical capsule directly driven by laser beams has been assessed numerically. Two schemes characterized by 32 and 48 directions of irradiation with associated a single laser beam or a bundle of laser beams characterized by a super-Gaussian intensity profile are considered. The calculations take into account beam imperfections as power imbalance and pointing errors. It is found that the optimum laser intensity profile, which minimizes the illumination uniformity, depends on the beams' imperfections. A comparison between both schemes shows that the 48 beams configuration allows better illumination uniformity than the 32 beams' configuration.

• OSTI ID: 21378071
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 17; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CAPSULES
CONTAINERS
FUNCTIONS
GAUSS FUNCTION
ILLUMINANCE
IRRADIATION
LASERS
LIGHT TRANSMISSION
PLASMA
TRANSMISSION