Self-similar structure and experimental signatures of suprathermal ion distribution in inertial confinement fusion implosions
The distribution function of suprathermal ions is found to be self-similar under conditions relevant to inertial confinement fusion hot-spots. By utilizing this feature, interference between the hydro-instabilities and kinetic effects is for the first time assessed quantitatively to find that the in...
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| Main Authors | , , , , , , |
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| Language | English |
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10.08.2015
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| Abstract | The distribution function of suprathermal ions is found to be self-similar under conditions relevant to inertial confinement fusion hot-spots. By utilizing this feature, interference between the hydro-instabilities and kinetic effects is for the first time assessed quantitatively to find that the instabilities substantially aggravate the fusion reactivity reduction. The ion tail depletion is also shown to lower the experimentally inferred ion temperature, a novel kinetic effect that may explain the discrepancy between the exploding pusher experiments and rad-hydro simulations and contribute to the observation that temperature inferred from DD reaction products is lower than from DT at National Ignition Facility. |
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| AbstractList | Phys. Rev. Lett. 115, 105002 (2015) The distribution function of suprathermal ions is found to be self-similar
under conditions relevant to inertial confinement fusion hot-spots. By
utilizing this feature, interference between the hydro-instabilities and
kinetic effects is for the first time assessed quantitatively to find that the
instabilities substantially aggravate the fusion reactivity reduction. The ion
tail depletion is also shown to lower the experimentally inferred ion
temperature, a novel kinetic effect that may explain the discrepancy between
the exploding pusher experiments and rad-hydro simulations and contribute to
the observation that temperature inferred from DD reaction products is lower
than from DT at National Ignition Facility. The distribution function of suprathermal ions is found to be self-similar under conditions relevant to inertial confinement fusion hot-spots. By utilizing this feature, interference between the hydro-instabilities and kinetic effects is for the first time assessed quantitatively to find that the instabilities substantially aggravate the fusion reactivity reduction. The ion tail depletion is also shown to lower the experimentally inferred ion temperature, a novel kinetic effect that may explain the discrepancy between the exploding pusher experiments and rad-hydro simulations and contribute to the observation that temperature inferred from DD reaction products is lower than from DT at National Ignition Facility. |
| Author | Rinderknecht, H G Rosenberg, M J McDevitt, C J Zylstra, A B Kagan, Grigory Svyatskiy, D C -K Huang |
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| BackLink | https://doi.org/10.1103/PhysRevLett.115.105002$$DView published paper (Access to full text may be restricted) https://doi.org/10.48550/arXiv.1505.00713$$DView paper in arXiv |
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| Copyright | 2015. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. http://arxiv.org/licenses/nonexclusive-distrib/1.0 |
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| DOI | 10.48550/arxiv.1505.00713 |
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| Snippet | The distribution function of suprathermal ions is found to be self-similar under conditions relevant to inertial confinement fusion hot-spots. By utilizing... Phys. Rev. Lett. 115, 105002 (2015) The distribution function of suprathermal ions is found to be self-similar under conditions relevant to inertial... |
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| SubjectTerms | Depletion Distribution functions Implosions Inertial confinement fusion Ion distribution Ion temperature Physics - Plasma Physics Reaction products Self-similarity |
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| Title | Self-similar structure and experimental signatures of suprathermal ion distribution in inertial confinement fusion implosions |
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