Radiative properties of asymmetric and symmetric X-pinches with two and four wires recently produced on the UNR 1MA Zebra generator

Kantsyrev, V.L.; Safronova, A.S.; Иванов, В. В.; Fedin, D. A.; Mancini, Roberto; Astanovitsky, A.; LeGalloudec, B.; Batie, S.; Brown, D. A.; Nalajala, V.; Shrestha, I.; Pokala, S.; Ouart, N.; Yılmaz, Fatih; Clinton, A.; Johnson, Melissa; Cowan, T. E.; Coverdale, C. A.; Deeney, C.; LePell, P.D.; Jobe, D.; Nielson, D.

doi:10.1016/j.jqsrt.2005.05.028

Cited by 17 publications

(14 citation statements)

References 12 publications

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“…The standard planar-loop X-pinch configuration [14] was applied with Al, Cu clad Al, Cu, stainless steel, Mo, W, combined Mo/Al and Mo/W wires. In the uniform X-pinch, the anode and cathode loops were made from the same material.…”

Section: A Z-pinch Loadsmentioning

confidence: 99%

“…In the third spectrometer a LiF crystal ( , radius of curvature 25.4 mm) was used with a 70-m-thick Be filter. Time-resolved X-ray spectra were obtained with a side-on, time-gated flat crystal spectrometer with a six-strip MCP imager [9], [14]. The full operational wavelength range for this spectrometer was reached by changing the flat crystal.…”

Section: B Diagnosticsmentioning

confidence: 99%

“…A typical set of obtained data is shown in Table III. Results of recent measurements of the relative subkiloelectronvolt X-ray yield, , normalized to previously obtained Mo 2 50 (m wire X-pinch data and sizes of a central emitting region are shown in Table III [14]. The new data on the radiation yield (including the EUV spectral region) are obtained and compared with wire array data.…”

Section: ) the Main Parameters Of 1-ma X-pinch Radiation Sourcesmentioning

confidence: 99%

“…X-pinch studies are applicable to wire array physics based on the same magnetohydrodynamics (MHD) and radiation processes. Applications of a 1-MA X-pinch implosion include X-ray spectroscopy [9], backlighting and microscopy [10], spectropolarimetry [11], as well as a radiation driver (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15) kJ in subkiloelectronvolt to 10 keV region) for pulsed power research, plasma physics, and material science [12]. The X-pinch yields short (0.1-10 ns) thermal X-ray bursts (XRB) ranging from subkiloelectronvolt to several kiloelectronvolts emitted from micrometer scale hot spots surrounded by a millimeter scale cooler plasma.…”

Section: Introductionmentioning

confidence: 99%

“…Three different types of such beams (with the energy of around several kiloelectronvolt and higher) were observed in X-pinches [13]. The proposed mechanism of X-ray multiburst generation in X-pinches was discussed in [14].…”

Section: Introductionmentioning

confidence: 99%

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Radiation properties and implosion dynamics of planar and cylindrical wire arrays, asymmetric and symmetric, uniform and combined X-pinches on the UNR 1-MA zebra generator

Kantsyrev

Safronova

Fedin

et al. 2006

IEEE Trans. Plasma Sci.

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In the following experiments, we studied implosions of different wire arrays and X-pinches produced on the 1-MA Zebra generator at the University of Nevada, Reno. Diagnostics included both spatially-resolved and time-gated X-ray imaging and spectroscopy, and laser probing. In particular, we compared planar wire arrays, to which little energy could be coupled via the conventional magnetic-to-kinetic conversion mechanism, to cylindrical wire arrays of comparable dimensions and mass. The planar wire arrays were shown to radiate much higher peak power and more energy in subkiloelectronvolt and kiloelectronvolt spectral ranges than cylindrical wire arrays. We tested the theoretical conjecture that enhanced resistivity due to the small-scale inhomogeneity of wire-array plasmas has a major effect on dynamics, energy coupling and radiation performance of wire-array Z-pinches. The study of Al, Alumel, and W cylindrical wire arrays shows a wide variety of characteristic behaviors in plasma implosions discussed hereinafter. Additional experimental results for symmetric and asymmetric, uniform stainless steel, Cu, Mo, combined Al/Mo, Mo/Al, Al/W, W/Al, and Mo/W X-pinches are also presented. New data for the total radiation yield are obtained. The planar structures of X-pinch plasma and the corresponding electron beam was observed for most of X-pinches. The generation of hot spots along original wires positions-cooler than those from the cross-wire region-and arc structures with hot spots between

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Section: A Z-pinch Loadsmentioning

confidence: 99%

Section: B Diagnosticsmentioning

confidence: 99%

Section: ) the Main Parameters Of 1-ma X-pinch Radiation Sourcesmentioning

confidence: 99%