Experimental configuration of direct drive cylindrical implosions on the OMEGA laser

Citation
Cw. Barnes et al., Experimental configuration of direct drive cylindrical implosions on the OMEGA laser, REV SCI INS, 70(1), 1999, pp. 471-475
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
REVIEW OF SCIENTIFIC INSTRUMENTS
ISSN journal
00346748 → ACNP
Volume
70
Issue
1
Year of publication
1999
Part
2
Pages
471 - 475
Database
ISI
SICI code
0034-6748(199901)70:1<471:ECODDC>2.0.ZU;2-O
Abstract
Details about the cylindrical implosions using direct-drive irradiation on the OMEGA Laser facility are provided. The experimental configuration, incl uding orientation, construction, and mounting of the targets is described. An attempt to characterize the modulation transfer function of the primary x-ray framing camera diagnostic results in insufficient exposure contrast b ut relative agreement with other determinations. The x-ray intensity of the titanium backlighter driven by the 2.5-ns-linear ramp of the laser beams i s described, and the relative intensity on film is compared to similar Nova experiments. The parallax effects of different length marker layers of hig h-opacity dichloropolystyrene are measured, resulting in the conclusion tha t the marker layer length should be matched to the laser drive illumination profile. (C) 1999 American Institute of Physics. [S0034-6748(99)73501-X].