WFRF:(Lahmann P. H.)
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Thermal decoupling of deuterium and tritium during the inertial confinement fusion shock-convergence phase
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- V. Kabadi, N. (author)
- MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
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- Simpson, R. (author)
- MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
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- Adrian, P. J. (author)
- MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA.
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- MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA Univ Studi Roma La Sapienza, Dipartimento SBAI, Via Antonio Scarpa 14, I-00161 Rome, Italy. (creator_code:org_t)
- American Physical Society, 2021
- 2021
- English.
- In: Physical review. E. - : American Physical Society. - 2470-0045 .- 2470-0053. ; 104:1
- Journal article (peer-reviewed)
Abstract
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
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- ref (subject category)
- art (subject category)
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- V. Kabadi, N.
- Simpson, R.
- Adrian, P. J.
- Bose, A.
- Frenje, J. A.
- Johnson, M. Gatu
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- Lahmann, B.
- Li, C. K.
- Parker, C. E.
- Seguin, F. H.
- Sutcliffe, G. D.
- Petrasso, R. D.
- Atzeni, S.
- Eriksson, Jacob, ...
- Forrest, C.
- Fess, S.
- Glebov, V. Yu
- Janezic, R.
- Mannion, O. M.
- Rinderknecht, H. ...
- Rosenberg, M. J.
- Stoeckl, C.
- Kagan, G.
- Hoppe, M.
- Luo, R.
- Schoff, M.
- Shuldberg, C.
- Sio, H. W.
- Sanchez, J.
- Hopkins, L. Berz ...
- Schlossberg, D.
- Hahn, K.
- Yeamans, C.
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Uppsala University
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