ICF Program: LDRD-ER Final Report
Abstract
In the 01-ERD-107 LDRD-ER project, we have performed novel Thomson scattering experiments at the Trident and Omega laser facilities and provided high quality spectral data. These results have led to the development of the first quantitative understanding of laser-plasma interactions for NIF plasmas. For this purpose an green/ultraviolet probe laser, built for Nova in 1998 [1] and successfully used to measure both temperature and plasma wave amplitudes [2], has been deployed on Omega. The Thomson scattering diagnostics has been used twofold: (1) it provided independent measurements of the plasma electron and ion temperature, the plasma flow velocity, or the electron distribution function; (2) it provided measurements of the primary plasma wave and their secondary non-linear decay wave products. These experiments at Omega provide definitive quantitative results on the nonlinear saturation of stimulated Raman scattering for green (2{omega}) beams. In addition, the experiments on the Trident laser have led to a quantitative understanding of the stimulated Brillouin scattering in low-Z plasmas. A nonlinear frequency detuning model has successfully explained all the experimental observable including the SBS reflectivity. This model has been implemented into the laser-plasma interaction code pF3D as a tool to design and optimize NIF target experiments with SBS andmore »
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 15013924
- Report Number(s):
- UCRL-TR-202456
TRN: US200803%%958
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; BRILLOUIN EFFECT; DISTRIBUTION FUNCTIONS; ION TEMPERATURE; PLASMA; PLASMA WAVES; SCATTERING; THOMSON SCATTERING
Citation Formats
Glenzer, S H. ICF Program: LDRD-ER Final Report. United States: N. p., 2004.
Web. doi:10.2172/15013924.
Glenzer, S H. ICF Program: LDRD-ER Final Report. United States. https://doi.org/10.2172/15013924
Glenzer, S H. 2004.
"ICF Program: LDRD-ER Final Report". United States. https://doi.org/10.2172/15013924. https://www.osti.gov/servlets/purl/15013924.
@article{osti_15013924,
title = {ICF Program: LDRD-ER Final Report},
author = {Glenzer, S H},
abstractNote = {In the 01-ERD-107 LDRD-ER project, we have performed novel Thomson scattering experiments at the Trident and Omega laser facilities and provided high quality spectral data. These results have led to the development of the first quantitative understanding of laser-plasma interactions for NIF plasmas. For this purpose an green/ultraviolet probe laser, built for Nova in 1998 [1] and successfully used to measure both temperature and plasma wave amplitudes [2], has been deployed on Omega. The Thomson scattering diagnostics has been used twofold: (1) it provided independent measurements of the plasma electron and ion temperature, the plasma flow velocity, or the electron distribution function; (2) it provided measurements of the primary plasma wave and their secondary non-linear decay wave products. These experiments at Omega provide definitive quantitative results on the nonlinear saturation of stimulated Raman scattering for green (2{omega}) beams. In addition, the experiments on the Trident laser have led to a quantitative understanding of the stimulated Brillouin scattering in low-Z plasmas. A nonlinear frequency detuning model has successfully explained all the experimental observable including the SBS reflectivity. This model has been implemented into the laser-plasma interaction code pF3D as a tool to design and optimize NIF target experiments with SBS and SRS losses included. The development of quantitative models for SBS and SRS for various regimes has now been adopted as part of the WBS1 project within the ICF program.},
doi = {10.2172/15013924},
url = {https://www.osti.gov/biblio/15013924},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 05 00:00:00 EST 2004},
month = {Thu Feb 05 00:00:00 EST 2004}
}