Properties of hot-spot emission in a warm plastic-shell implosion on the OMEGA laser system
- China Academy of Engineering Physics, Mianyang (China). Research Center of Laser Fusion; Univ. of Rochester, NY (United States). Lab. for Laser Energetics and Fusion Science Center; Laboratory or Laser Energetics, University of Rochester
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics and Fusion Science Center
A warm plastic-shell implosion was performed on the OMEGA laser system. The measured corona plasma evolution and shell trajectory in the acceleration phase are reasonably simulated by the one-dimensional LILAC simulation including the nonlocal and cross-beam energy transfer models. The results from analytical thin-shell model reproduce the time-dependent shell radius by LILAC simulation, and also the hot-spot x-ray emissivity profile at stagnation predicted by Spect3D. In the Spect3D simulations within a clean implosion, a “U”-shaped hot-spot radius evolution can be observed with the Kirkpatrick-Baez microscope response (the photon energy is from 4 to 8 keV). However, a fading away hot-spot radius evolution was measured in OMEGA warm plastic-shell implosion because of mixings. In order to recover the measured hot-spot x-ray emissivity profile at stagnation, a non-isobaric hot-spot model is built, and the normalized hot-spot temperature, density, and pressure profiles (normalized to the corresponding target-center values) are obtained.
- Research Organization:
- Univ. of Rochester, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA); New York State Energy Research and Development Authority (NYSERDA); National Natural Science Foundation of China (NSFC)
- Grant/Contract Number:
- NA0001944; FC02-04ER54789
- OSTI ID:
- 1476297
- Alternate ID(s):
- OSTI ID: 1473985
- Report Number(s):
- 2017--106, 1435; {"2017-106, 1435, 2393","Journal ID: ISSN PLEEE8","Journal ID: ISSN 2470-0045"}
- Journal Information:
- Physical Review E, Journal Name: Physical Review E Journal Issue: 3 Vol. 98; ISSN PLEEE8; ISSN 2470-0045
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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