Proton core imaging of the nuclear burn in inertial confinement fusion implosions
| Autor: | T. C. Sangster, S. Kurebayashi, S. Roberts, J. A. Frenje, Harry Robey, V. Berube, Chiping Chen, J. P. Knauer, C. K. Li, F. J. Marshall, J. L. Deciantis, M. J. Canavan, Christian Stoeckl, R. D. Petrasso, Karnig O. Mikaelian, J. R. Rygg, F. H. Séguin, J. A. Delettrez, D. D. Meyerhofer, Susan Regan, V. A. Smalyuk, H.-S. Park, B. E. Schwartz |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 77:043503 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.2173788 |
| Popis: | A proton emission imaging system has been developed and used extensively to measure the nuclear burn regions in the cores of inertial confinement fusion implosions. Three imaging cameras, mounted to the 60-beam OMEGA laser facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)], use the penetrating 14.7MeV protons produced from DHe3 fusion reactions to produce emission images of the nuclear burn spatial distribution. The technique relies on penumbral imaging, with different reconstruction algorithms for extracting the burn distributions of symmetric and asymmetric implosions. The hardware and design considerations required for the imaging cameras are described. Experimental data, analysis, and error analysis are presented for a representative symmetric implosion of a fuel capsule with a 17-μm-thick plastic shell and 18atm DHe3 gas fill. The radial burn profile was found to have characteristic radius Rburn, which we define as the radius containing half the DHe3 reactions, of 32±2μm (burn radii measure... |
| Databáze: | OpenAIRE |
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