Zobrazeno 1 - 10
of 71
pro vyhledávání: '"C. F. Hooper"'
Autor:
W. Seka, D. A. Haynes, Igor Golovkin, J. A. Delettrez, D. D. Meyerhofer, C. F. Hooper, Susan Regan, B. Yaakobi, Paul A. Jaanimagi, Reuben Epstein, F. J. Marshall, V. A. Smalyuk
Publikováno v:
Physics of Plasmas. 9:1357-1365
Direct-drive-implosion core conditions have been characterized on the 60-beam OMEGA [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] laser system with time-resolved Ar K-shell spectroscopy. Plastic shells with an Ar-doped deuterium fill gas were d
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 71:373-382
It has been argued previously that line profiles created using a quantum model to second order in the radiator-perturbing electron interaction are reasonable over a wide region of plasma temperatures and densities for K shell α, β, and γ lines of
Autor:
Cris W. Barnes, G.D Pollack, David L. Tubbs, Paul A. Jaanimagi, N. D. Delamater, D.A. Haynes, C. F. Hooper
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 65:297-302
K-shell X-ray emission from a chlorinated marker layer is used to diagnose the density and temperature evolution of the inner surface of the ablator in a series of directly driven cylindrical implosions. Because the shape of the emitting region is ir
Publikováno v:
Le Journal de Physique IV. 10:Pr5-485
In this paper we briefly review the theory of plasma induced line shifts and present some experimental evidence. We then consider the effects that these shifts have on the merging of line series. Influence on continuum lowering is also discussed.
Measurements of core and pusher conditions in surrogate capsule implosions on the OMEGA laser system
Autor:
Mark Gunderson, W. Seka, D. D. Meyerhofer, Susan Regan, C. F. Hooper, D. K. Bradley, F. J. Marshall, T. R. Boehly, C. P. Verdon, Ronald M. Epstein, D. A. Haynes, Perry M. Bell, V. A. Smalyuk, Richard Town, J. A. Delettrez, R. A. Lerche, T. J. Ognibene, J. P. Knauer, B. Yaakobi, Gwyneth Junkel
Publikováno v:
Physics of Plasmas. 5:1870-1879
Experiments have been carried out on the 60-beam, 30 kJ OMEGA laser system [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] as part of an integrated program to diagnose all phases of direct-drive capsule implosions. Laser-imprint levels and Raylei
Autor:
D.A. Haynes, C. F. Hooper
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 58:607-617
While the formal development of Stark broadening theory admits the consideration of transitions involving continuum radiator wavefunctions, standard implementations of the theory use techniques and approximations inappropriate to the calculation of s
Autor:
Roberto Mancini, Y.T. Lee, David K. Bradley, D.A. Haynes, Paul A. Jaanimagi, Ronald M. Epstein, J. A. Delettrez, C. F. Hooper, D.T. Garber
Publikováno v:
Laser and Particle Beams. 14:713-730
A brief discussion of the standard theory of line broadening is presented together with an analysis of selected laser-driven implosion experiments. The effect of improved theoretical procedures on experimental analysis is discussed. In particular, we
Publikováno v:
Journal of X-Ray Science and Technology. 6:172-187
High-temperature laser target implosions can be achieved by using relatively thin-shell targets, and they can be. diagnosed by doping the fuel with krypton and measuring K-shell and L-shell lines. Electron temperatures of up to 5 keV at modest compre
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 51:201-210
We have modeled the optical depth of hot, dense Ar plasmas due to line absorption in n = 1 to n = 2 inner-shell transitions in L -shell Ar ions by performing Stark broadened absorption line profile and ionization balance calculations. Our results hav
Autor:
C. F. Hooper, B. A. Hammel, L. J. Suter, D. R. Kania, Richard W. Lee, Roberto Mancini, N. D. Delamater, Christopher J. Keane, Albert L. Osterheld
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 51:147-159
We report on the analysis of K- and L-shell spectra obtained from Ar and Xe dopants seeded into the fuel region of plastic capsules indirectly imploded using the Nova laser. Stark broadening of the Ar Ly-β and He-β lines is used to infer fuel elect