Hard X-ray and Hot Electron Environment in Vacuum Hohlraums at NIF

Conference · Thu Sep 22 00:00:00 EDT 2005

DOI:https://doi.org/10.1051/jp4:2006133062· OSTI ID:883495

McDonald, J W; Suter, L J; Landen, O L; Foster, J M; Celeste, J R; Holder, J P; Dewald, E L; Schneider, M B; Hinkel, D E; Kauffman, R L; Atherton, L J; Bonanno, R E; Dixit, S N; Eder, D C; Haynam, C A; Kalantar, D H; Koniges, A E; Lee, F D; MacGowan, B J; Manes, K R ; Munro, D H; Murray, J R; Shaw, M J; Stevenson, R M; Parham, T G; Van Wonterghem, B M; Wallace, R J; Wegner, P J; Whitman, P K; Young, B K; Hammel, B A; Moses, E I

Time resolved hard x-ray images (hv > 9 keV) and time integrated hard x-ray spectra (hv = 18-150 keV) from vacuum hohlraums irradiated with four 351 nm wavelength NIF laser beams are presented as a function of hohlraum size and laser power and duration. The hard x-ray images and spectra provide insight into the time evolution of the hohlraum plasma filling and the production of hot electrons. The fraction of laser energy detected as hot electrons (f{sub hot}) and a comparison to a filling model are presented.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 883495
• Report Number(s): UCRL-PROC-215740; TRN: US200615%%65
• Resource Relation: Journal Volume: 133; Conference: Presented at: 4th International Conference on Inertial Fusion Sciences and Applications, Biarritz, France, Sep 04 - Sep 09, 2005
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ELECTRONS
LASERS
PLASMA
PRODUCTION
SPECTRA
WAVELENGTHS
X-RAY SPECTRA