Zobrazeno 1 - 10
of 181
pro vyhledávání: '"B.H. Failor"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 792:67-73
The delayed γ-ray and neutron fission signals utilized in active inspection techniques were measured simultaneously in order to directly compare their detection sensitivities. Fissionable and non-fissionable targets were irradiated by a 15-Hz pulsed
Publikováno v:
IEEE Transactions on Plasma Science. 38:545-553
Investigations of magnetic field diffusion and plasma resistivity in 12-cm-diameter triple-gas-puff Ar Z-pinch implosions were carried out by using planar laser-induced fluorescence (PLIF), a laser shearing interferometer (LSI), and a laser wavefront
Autor:
P.L. Coleman, J.W. Thornhill, J. C. Davis, J.S. Levine, A. L. Velikovich, John P. Apruzese, J.W. Banister, B.H. Failor, Christine Anne Coverdale, H.M. Sze
Publikováno v:
IEEE Transactions on Plasma Science. 35:31-42
We report an approximate energy distribution (coarse spectrum) over the range ~0.1 to > 10 keV for the X-ray output of an argon Z-pinch. The tests, conducted at ~15-MA peak current, utilized an 8-cm diameter double-shell nozzle. Sze (2001) have previ
Autor:
John P. Apruzese, J.S. Levine, A. L. Velikovich, D.P. Murphy, B.H. Failor, Niansheng Qi, F.C. Young, D. Mosher, J.W. Banister, R.J. Commisso, H.M. Sze, P.L. Coleman
Publikováno v:
IEEE Transactions on Plasma Science. 34:2312-2324
Time-resolved measurements of the absolute free-bound (FB) continuum spectrum emitted from a 12-cm-diameter argon gas-puff Z-pinch driven at ~6-MA peak current with 220- to 260-ns implosion times are reported. A crystal spectrometer is used with sili
Publikováno v:
IEEE Transactions on Plasma Science. 33:752-762
We have developed a 12-cm-diameter Ar gas Z-pinch load, which produces two annular gas shells and a center gas jet. The two-dimensional (2-D) gas density profiles of the load, in r-/spl theta/ and r-z planes, were measured with submillimeter spatial
Publikováno v:
Physics of Plasmas. 11:2054-2059
Recently, an 8 cm diameter double-shell nozzle has produced argon Z pinches with high K-shell yields with implosion time of 210 ns. To produce even longer implosion time Z pinches for facilities such as Decade Quad [D. Price, et al., “Electrical an
Autor:
Y. Song, Robert C. Hazelton, P.L. Coleman, J.J. Moschella, J. Niemel, B.H. Failor, J.S. Levine, E.J. Yadlowsky, C. Vidoli, H.M. Sze, Eric Carlson, J.W. Thornhill
Publikováno v:
IEEE Transactions on Plasma Science. 31:1355-1362
Theoretical studies have predicted that the disruptive role of the Rayleigh-Taylor (R-T) instability on the current conduction and implosion characteristics of annular Z-pinch loads will be mitigated by mass accretion if uniform fill or multiple annu
Publikováno v:
Review of Scientific Instruments. 74:1070-1076
We have applied the technique of acetone laser-induced fluorescence (LIF) to the measurement of gas distributions from axisymmetric supersonic nozzles used to produce loads for z-pinch plasma radiation sources. Typical peak particle densities are ∼
Autor:
C. R. Coverdale, B.H. Failor, Robert C. Hazelton, J.S. Levine, C. Christopher Klepper, B. L. Whitten, M. D. Keitz, Y. Song, F. Barakat, C. Deeney, E.J. Yadlowsky, R. B. Spielman, Eric Carlson
Publikováno v:
Journal of Applied Physics. 92:3458-3462
The Doppler broadening of ion line profiles emitted by z-pinch plasma provides information about the thermalization of the implosion kinetic energy and the radiation efficiency of the pinch. Measurements of these line profiles are often complicated b
Autor:
P.L. Coleman, J.W. Banister, H.M. Sze, Christopher Deeney, J. C. Davis, B.H. Failor, D. Bell, Christine Anne Coverdale, Y. Song, John P. Apruzese, J.S. Levine
Publikováno v:
IEEE Transactions on Plasma Science. 30:532-537
A series of nickel z pinch experiments was conducted at 18 MA current on the Z accelerator producing up to 13 kJ of K-shell radiation at 7.8 keV and above. Double-shell wire arrays were used, with the diameter of the outer array of the nested structu