Effects of residual kinetic energy on yield degradation and ion temperature asymmetries in inertial confinement fusion implosions
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics. Dept. of Physics and Astronomy
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics. Dept. of Physics and Astronomy. Dept. of Mechanical Engineering
- Ben-Gurion Univ. of the Negev, Beer-Sheva (Israel). Dept. of Mechanical Engineering; Nuclear Research Center-Negev, Beer-Sheva (Israel). Dept. of Physics
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics. Dept. of Mechanical Engineering
- Univ. of Science and Technology of China, Hefei (China). Dept. of Modern Mechanics
- National Cheng Kung Univ., Tainan (Taiwan). Inst. of Space and Plasma Sciences
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Technical Univ. of Madrid (Spain)
- Univ. of Rochester, NY (United States). Dept. of Mechanical Engineering
The study of Rayleigh–Taylor instability in the deceleration phase of inertial confinement fusion implosions is carried out using the three-dimensional (3-D) radiation-hydrodynamic Eulerian parallel code DEC3D. In this paper, we show that the yield-over-clean is a strong function of the residual kinetic energy (RKE) for low modes. Our analytical models indicate that the behavior of larger hot-spot volumes observed in low modes and the consequential pressure degradation can be explained in terms of increasing the RKE. These results are derived using a simple adiabatic implosion model of the deceleration phase as well as through an extensive set of 3-D single-mode simulations using the code DEC3D. The effect of the bulk velocity broadening on ion temperature asymmetries is analyzed for different mode numbers -12. The jet observed in low mode is shown to cause the largest ion temperature variation in the mode spectrum. Finally, the vortices of high modes within the cold bubbles are shown to cause lower ion temperature variations than low modes.
- Research Organization:
- Univ. of Rochester, NY (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- NA0001944; SC0014318
- OSTI ID:
- 1437598
- Alternate ID(s):
- OSTI ID: 1436556
- Journal Information:
- Physics of Plasmas, Vol. 25, Issue 5; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Tripled yield in direct-drive laser fusion through statistical modelling
|
journal | January 2019 |
Analysis of trends in experimental observables: Reconstruction of the implosion dynamics and implications for fusion yield extrapolation for direct-drive cryogenic targets on OMEGA
|
journal | June 2018 |
A theoretical model for low-mode asymmetries in ICF implosions
|
journal | February 2019 |
Analysis of NIF scaling using physics informed machine learning
|
journal | January 2020 |
Kinetic simulations of fusion ignition with hot-spot ablator mix
|
journal | September 2019 |
Similar Records
Validation of the model for ELM suppression with 3D magnetic fields using low torque ITER baseline scenario discharges in DIII-D
Non-inductively driven tokamak plasmas at near-unity βt in the Pegasus toroidal experiment