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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Greenwood, A.L. Kaae, J.L. Nikroo, A. Steinman, D.A. |
| Copyright Year | 2003 |
| Description | Author affiliation: Gen. Atomics, San Diego, CA, USA (Greenwood, A.L.; Kaae, J.L.; Nikroo, A.; Steinman, D.A.) |
| Abstract | Summary form only given, as follows. Direct-drive inertial confinement fusion (ICF) offers the potential for high gain and is a leading candidate for an inertial fusion-energy power plant. Laser and target nonuniformities can seed hydrodynamic instabilities during the implosion that, in turn, can compromise target performance. This is the primary target physics issue for direct-drive ICF. Several methods have been devised to control these seeds and their subsequent growth, including laser beam smoothing, advanced pulse shaping, target design, etc. LLE's baseline direct-drive ignition design for the National Ignition Facility (presently under construction at the Lawrence Livermore National Laboratory) is composed of a thin (3-/spl mu/m) plastic shell enclosing a thick (350-/spl mu/m) deuterium-tritium (DT)-ice layer. It provides a gain of 45 in spherically symmetric calculations (30 m two-dimensional simulations which include the effects of laser and target nonuniformities). Recent improvements to the ignition target design include the addition of a picket to the beginning of the laser pulse shape that reduces both the seeds and growth rate of the hydrodynamic instabilities Experiments performed on the 60-beam, 30-kJ UV OMEGA laser on warm and cryogenic targets are diagnosed using X-rays and nuclear particles. Significant improvements in warm capsule implosion target performance have been observed with improvements in beam smoothing on OMEGA. |
| Sponsorship | Plasma Sci. & Applications Committee of the IEEE Nucl. & Plasma Sci. Soc. Hanyang Univ. Japan Soc. Plasma Res. Assoc. Korea Atomic Energy Res. Inst. Korea Basic Sci. Inst. Korea Vacuum Soc |
| File Size | 98122 |
| File Format | |
| ISBN | 078037911X |
| ISSN | 07309244 |
| DOI | 10.1109/PLASMA.2003.1230020 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-06-05 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Fabrication Inertial confinement Ignition Laser fusion Laser theory Hydrodynamics Laser beams Structural beams Smoothing methods Optical design |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering |
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