Direct-drive high-convergence-ratio implosion studies on the OMEGA laser system
Creators
- 1. Laboratory For Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
Description
A series of direct-drive implosion experiments, using room-temperature, gas-filled CH targets, are performed on the University of Rochester's OMEGA laser system [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. The target performance at stagnation and its dependence on beam smoothing and pulse shaping is investigated. Compressed core conditions are diagnosed using x-ray and neutron spectroscopy, and x-ray imaging. The individual beams of OMEGA are smoothed by spectral dispersion in two dimensions (2D SSD) with laser bandwidths up to ∼0.3 THz, with 1 ns square to 2.5 ns shaped pulses. A clear dependence of target performance on pulse shape and beam smoothing is seen, with the target performance (yield, areal density, and shell integrity) improving as SSD bandwidth is applied. (c)
Additional details
Publishing Information
- Journal Title
- Physics of Plasmas
- Journal Volume
- 7
- Journal Issue
- 5
- Journal Page Range
- p. 2108-2113
- ISSN
- 1070-664X
- CODEN
- PHPAEN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 32059775
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- DIRECT DRIVE LASER IMPLOSION; EXPERIMENTAL DATA; IMPLOSIONS; LASER FUSION REACTORS; NEUTRON SPECTROSCOPY; OMEGA FACILITY; PLASMA DIAGNOSTICS; X-RAY SPECTROSCOPY
- Descriptors DEC
- DATA; IMPLOSIONS; INFORMATION; LASER IMPLOSIONS; NUMERICAL DATA; SPECTROSCOPY; THERMONUCLEAR REACTORS
- Proposed descriptors and Free-text terms
- laser fusion; pulse shaping