Measuring Implosion Dynamics throughρREvolution in Inertial-Confinement Fusion Experiments
| Autor: | Johan Frenje, J. R. Rygg, V. Yu. Glebov, S. Kurebayashi, P. B. Radha, Christian Stoeckl, Fredrick Seguin, C. K. Li, B. E. Schwartz, D. D. Meyerhofer, T. C. Sangster, J. M. Soures, R. D. Petrasso, J. A. Delettrez |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Physical Review Letters. 90 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.90.095002 |
| Popis: | The areal density ($\ensuremath{\rho}R$) of $\mathrm{D}^{3}\mathrm{H}\mathrm{e}$ filled plastic capsules imploded at OMEGA has been measured at shock coalescence (1.7 ns) and, 400 ps later, during compressive burn, through the energy downshift of 14.7-MeV $\mathrm{D}^{3}\mathrm{H}\mathrm{e}$ protons. In this time interval, the azimuthally averaged $\ensuremath{\rho}R$ changes from $13\ifmmode\pm\else\textpm\fi{}2.5$ to $70\ifmmode\pm\else\textpm\fi{}8\text{ }\text{ }\mathrm{m}\mathrm{g}/{\mathrm{c}\mathrm{m}}^{2}$. The experiments demonstrate that fuel-shell mix is absent in the central regions at shock coalescence, and that the shell has no holes during compressive burn. We conjecture that $\ensuremath{\rho}R$ asymmetries measured during compressive burn may be seeded by the time of shock coalescence. |
| Databáze: | OpenAIRE |
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