4 Matching Results

Search Results

Results: 1 - 4
open access

Laboratory directed research and development program FY 2003

Description: The Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley Lab or LBNL) is a multi-program national research facility operated by the University of California for the Department of Energy (DOE). As an integral element of DOE's National Laboratory System, Berkeley Lab supports DOE's missions in fundamental science, energy resources, and environmental quality. Berkeley Lab programs advance four distinct goals for DOE and the nation: (1) To perform leading multidisciplinary research in the… more
Date: March 27, 2004
Creator: Hansen, Todd
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of the Electron Energy Distribution Function on Line and Continuum Emission

Description: Effects of suprathermal (''hot'') electrons on the predictions of K- and L-shell non-LTE collisional-radiative atomic kinetics models are presented through an investigation of various electron distribution functions (EDFs) on collisional rates and spectra. It is shown that while most collisional rates are fairly insensitive to the functional form and characteristic energy of the hot electrons as long as their characteristic energy is larger than the threshold energy for the collisional process,… more
Date: March 18, 2004
Creator: Hansen, S. B. & Shlyaptseva, A. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The effect of a short wavelength mode on the evolution of a long wavelength perturbation driven by a strong blast wave

Description: Shock-accelerated material interfaces are potentially unstable to both the Richtmyer-Meshkov and Rayleigh-Taylor instabilities. Shear that develops along with these instabilities in turn drives the Kelvin-Helmholtz instability. When driven by strong shocks, the evolution and interaction of these instabilities is further complicated by compressibility effects. In this paper, we present a computational study of the formation of jets at strongly driven hydrodynamically unstable interfaces, and the… more
Date: March 16, 2004
Creator: Miles, A. R.; Edwards, M.; Blue, B.; Hansen, J. F.; Robey, H. F.; Drake, R. P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

X-ray Spectropolarimetry of high temperature and high density plasma supported by LLNL Electron Beam Ion Trap Experiments

Description: Plasma polarization spectroscopy work done by our group since the 3rd US-Japan PPS Workshop is overviewed. Theoretically, the polarization dependence on various electron distribution functions for He-like, Ne-like, and Ni-like x-ray transitions for a wide range of Z has been investigated. In particular, this study was focused on the polarization dependence for monoenergetic and steep electron distribution functions. The diagnostically important spectral lines and features of K-, L-, and M-shell… more
Date: March 15, 2004
Creator: Shlyaptseva, A S; Kantsyrev, V L; Ouart, N D; Fedin, D A; Neill, P; Harris, C et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen