Electron-Heated Target Temperature Measurements in Petawatt Laser Experiments Based on Extreme Ultraviolet Imaging and Spectroscopy

Conference · Fri May 02 00:00:00 EDT 2008

DOI:https://doi.org/10.1063/1.2965260· OSTI ID:938477

Ma, T; Beg, F; Macphee, A; Chung, H; Key, M; Mackinnon, A; Patel, P; Hatchett, S; Akli, K; Stephens, R; Chen, C; Freeman, R; Link, A; Offermann, D; Ovchinnikov, V; VanWoerkom, L; Zhang, B

Three independent methods (XUV spectroscopy, imaging at 68 eV and 256 eV) have been used to measure planar target rear surface plasma temperature due to heating by hot electrons. The hot electrons are produced by ultra-intense laser plasma interactions using the 150 J, 0.5 ps Titan laser. Soft x-ray spectroscopy in the 50-400 eV region and imaging at the 68 eV and 256 eV photon energies were used to determine the rear surface temperature of planar CD targets. Temperatures were found to be in the 60-150 eV range, with good agreement between the three diagnostics.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 938477
• Report Number(s): LLNL-CONF-403469; TRN: US0805954
• Resource Relation: Journal Volume: 79; Journal Issue: 10; Conference: Presented at: High Temperature Plasma Diagnostics 2008, Albuquerque, NM, United States, May 11 - May 15, 2008
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ELECTRON TEMPERATURE
ELECTRONS
EV RANGE
HEATING
ION TEMPERATURE
LASERS
PETAWATT POWER RANGE
PHOTONS
PLASMA DIAGNOSTICS
SPECTROSCOPY
TARGETS
TEMPERATURE MEASUREMENT
X-RAY SPECTROSCOPY