Direct measurement of laser irradiation uniformity of fusion pellets by the use of X-ray frame images

Citation
H. Honda et al., Direct measurement of laser irradiation uniformity of fusion pellets by the use of X-ray frame images, FUSION ENG, 44, 1999, pp. 137-140
Citations number
5
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Nuclear Emgineering
Journal title
FUSION ENGINEERING AND DESIGN
ISSN journal
0920-3796 → ACNP
Volume
44
Year of publication
1999
Pages
137 - 140
Database
ISI
SICI code
0920-3796(199902)44:<137:DMOLIU>2.0.ZU;2-C
Abstract
Time-resolved 2-dimensional (2D) X-ray images were taken to evaluate laser irradiation non-uniformity of fusion pellets. X-ray distributions correspon ding to the drive laser geometry were obtained on the circumference of the image of a gold-coated surrogate target. The experimental results were anal yzed to derive the irradiances by using an experimentally-determine d relat ion between the laser irradiation intensity and the X-ray intensity. The an alyzed results were compared with a laser illumination calculation in which temporally varying laser beams were projected onto a target sphere. A reas onable agreement between the measurement and calculation has been obtained. (C) 1999 Elsevier Science S.A. All rights reserved.