Thermal decoupling of deuterium and tritium during the inertial confinement fusion shock-convergence phase
| Autor: | C. Shuldberg, M. Schoff, Michael Rosenberg, Chikang Li, J. J. Sanchez, L. F. Berzak Hopkins, Jacob Eriksson, David Schlossberg, Christian Stoeckl, Chad Forrest, Patrick Adrian, Johan Frenje, Owen Mannion, R. Janezic, G. Kagan, S. Fess, M. Hoppe, C. E. Parker, Raspberry Simpson, V. Yu. Glebov, Stefano Atzeni, R. D. Petrasso, Brandon Lahmann, H. Sio, M. Gatu Johnson, R.W. Luo, C. B. Yeamans, K. D. Hahn, Arijit Bose, H. G. Rinderknecht, Graeme Sutcliffe, Neel Kabadi, Fredrick Seguin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Physical Review E. 104 |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/physreve.104.l013201 |
| Popis: | A series of thin glass-shell shock-driven DT gas-filled capsule implosions was conducted at the OMEGA laser facility. These experiments generate conditions relevant to the central plasma during the shock-convergence phase of ablatively driven inertial confinement fusion (ICF) implosions. The spectral temperatures inferred from the DTn and DDn spectra are most consistent with a two-ion-temperature plasma, where the initial apparent temperature ratio, T_{T}/T_{D}, is 1.5. This is an experimental confirmation of the long-standing conjecture that plasma shocks couple energy directly proportional to the species mass in multi-ion plasmas. The apparent temperature ratio trend with equilibration time matches expected thermal equilibration described by hydrodynamic theory. This indicates that deuterium and tritium ions have different energy distributions for the time period surrounding shock convergence in ignition-relevant ICF implosions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|