Two-plasmon decay mitigation in direct-drive inertial-confinement-fusion experiments using multilayer targets
Abstract
Multilayer direct-drive inertial-confinement-fusion (ICF) targets are shown to significantly reduce two-plasmon-decay (TPD) driven hot-electron production while maintaining high hydrodynamic efficiency. Implosion experiments on the OMEGA Laser used targets with silicon layered between an inner beryllium and outer silicon-doped plastic ablator. A factor of five reduction in hot-electron generation (> 50 keV) was observed in the multilayer targets relative to pure CH targets. Three-dimensional simulations of the TPD driven hot-electron production using a laser-plasma interaction code (LPSE) that includes nonlinear and kinetic effects show excellent agreement with the measurements. As a result, the simulations suggest that the reduction in hot-electron production observed in the multilayer targets is primarily due to increased electron-ion collisional damping.
- Authors:
-
- Univ. of Rochester, Rochester, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1255563
- Alternate Identifier(s):
- OSTI ID: 1247830
- Grant/Contract Number:
- NA0001944
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 15; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Follett, R. K., Delettrez, J. A., Edgell, D. H., Goncharov, V. N., Henchen, R. J., Katz, J., Michel, D. T., Myatt, J. F., Shaw, J., Solodov, A. A., Stoeckl, C., Yaakobi, B., and Froula, D. H. Two-plasmon decay mitigation in direct-drive inertial-confinement-fusion experiments using multilayer targets. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.155002.
Follett, R. K., Delettrez, J. A., Edgell, D. H., Goncharov, V. N., Henchen, R. J., Katz, J., Michel, D. T., Myatt, J. F., Shaw, J., Solodov, A. A., Stoeckl, C., Yaakobi, B., & Froula, D. H. Two-plasmon decay mitigation in direct-drive inertial-confinement-fusion experiments using multilayer targets. United States. https://doi.org/10.1103/PhysRevLett.116.155002
Follett, R. K., Delettrez, J. A., Edgell, D. H., Goncharov, V. N., Henchen, R. J., Katz, J., Michel, D. T., Myatt, J. F., Shaw, J., Solodov, A. A., Stoeckl, C., Yaakobi, B., and Froula, D. H. Fri .
"Two-plasmon decay mitigation in direct-drive inertial-confinement-fusion experiments using multilayer targets". United States. https://doi.org/10.1103/PhysRevLett.116.155002. https://www.osti.gov/servlets/purl/1255563.
@article{osti_1255563,
title = {Two-plasmon decay mitigation in direct-drive inertial-confinement-fusion experiments using multilayer targets},
author = {Follett, R. K. and Delettrez, J. A. and Edgell, D. H. and Goncharov, V. N. and Henchen, R. J. and Katz, J. and Michel, D. T. and Myatt, J. F. and Shaw, J. and Solodov, A. A. and Stoeckl, C. and Yaakobi, B. and Froula, D. H.},
abstractNote = {Multilayer direct-drive inertial-confinement-fusion (ICF) targets are shown to significantly reduce two-plasmon-decay (TPD) driven hot-electron production while maintaining high hydrodynamic efficiency. Implosion experiments on the OMEGA Laser used targets with silicon layered between an inner beryllium and outer silicon-doped plastic ablator. A factor of five reduction in hot-electron generation (> 50 keV) was observed in the multilayer targets relative to pure CH targets. Three-dimensional simulations of the TPD driven hot-electron production using a laser-plasma interaction code (LPSE) that includes nonlinear and kinetic effects show excellent agreement with the measurements. As a result, the simulations suggest that the reduction in hot-electron production observed in the multilayer targets is primarily due to increased electron-ion collisional damping.},
doi = {10.1103/PhysRevLett.116.155002},
journal = {Physical Review Letters},
number = 15,
volume = 116,
place = {United States},
year = {Fri Apr 15 00:00:00 EDT 2016},
month = {Fri Apr 15 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
Mitigation of hot electrons from laser-plasma instabilities in high-Z, highly ionized plasmas
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