Probing ion species separation and ion thermal decoupling in shock-driven implosions using multiple nuclear reaction histories
| Autor: | Christian Stoeckl, M. Gatu Johnson, Stefano Atzeni, C. K. Li, Chad Forrest, Hong Sio, Olivier Larroche, Patrick Adrian, R. D. Petrasso, A. Birkel, Neel Kabadi, Arijit Bose, Johan Frenje, Fredrick Seguin, Susan Regan, V. Y. Glebov |
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| Jazyk: | angličtina |
| Předmět: |
Nuclear reaction
Physics Plasma Physics Inertial confinement fusion Ion temperature Decoupling (cosmology) shock-driven implosion Condensed Matter Physics 01 natural sciences Molecular physics 010305 fluids & plasmas Ion Reaction rate Plasma Physics Inertial confinement fusion shock-driven implosion 0103 physical sciences Thermal Knudsen number 010306 general physics |
| Zdroj: | Physics of Plasmas |
| ISSN: | 1089-7674 1070-664X |
| DOI: | 10.1063/1.5097605 |
| Popis: | Simultaneously measured DD, DT, and D3He reaction histories are used to probe the impacts of multi-ion physics during the shock phase of inertial confinement fusion implosions. In these relatively hydrodynamiclike (burn-averaged Knudsen number ⟨NK⟩ ∼0.3) shock-driven implosions, average-ion hydrodynamic DUED simulations are able to reasonably match burnwidths, nuclear yields, and ion temperatures. However, kinetic-ion FPION simulations are able to better simulate the timing differences and time-resolved reaction rate ratios between DD, DT, and D3He reactions. FPION simulations suggest that the D3He/DT reaction rate ratio is most directly impacted by ion species separation between the 3He and T ions, whereas the D3He/DD reaction rate ratio is affected by both ion species separation and ion temperature decoupling effects. |
| Databáze: | OpenAIRE |
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