Symmetric multilayer megampere X-pinch

Shelkovenko, T. A.; Pikuz, S. A.; McBride, R. D.; Knapp, Patrick; Wilhelm, G.; Sinars, Daniel Brian; Hammer, D. A.; Orlov, N. Yu.

doi:10.1134/s1063780x10010046

Cited by 12 publications

(14 citation statements)

References 37 publications

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“…The X pinch radiation power increases with increasing generator current; however, the linear mass required for this increases as well [13,[24][25][26]. This leads to an increase in the diameter and number of wires needed to provide the required load mass in stan dard X pinches.…”

Section: Introductionmentioning

confidence: 91%

“…Since the maximum current and current rise time at the COBRA facility were two times larger than those at the XP facility, a wire with a larger diameter was used as a hybrid X pinch load, and the electrode gap length was increased. When choosing the linear wire mass, we first oriented toward the opti mal linear mass of symmetric multiwire X pinches [24,25] equal, e.g., to 1.7 mg/cm for the (1 × 25 μm NiCr + 6 × 26 μm Mo + 12 × 25 μm W) configuration. However, it turned out that the linear mass for hybrid pinches at the same current rise time was nearly two times smaller both for molybdenum and tungsten wires (see Table 2).…”

Section: Application Of a Hybrid X Pinch As The Main Load For Point Pmentioning

confidence: 99%

“…The spatial structure and the energy spectrum of emission was studied and the radiation source size was estimated using pinhole cameras with different filters and hole diameters, slit cameras with step filters (SSW cameras) [17,28], and cameras with slit masks [25,33].…”

Section: Hybrid X Pinch Structure and Diagnostics Used To Study Itmentioning

confidence: 99%

“…The random configuration of the X pinch crossing easily breaks the symmetry of the wire crossing region and makes the process of the neck formation unstable. A multilayer symmetric X pinch configuration was pro posed to increase the stability and improve the repro ducibility of HS formation at high load currents [24,25]. However, the ordering of wires in the X pinch crossing region turned out to significantly complicate the process of load fabrication.…”

Section: Introductionmentioning

confidence: 99%

“…Such a radiation source is ideal for the method of point projection X ray imaging, which is an efficient diagnostic means yielding both qualitative and quantitative data on the object under study [19]. Very often, this diagnostics is the only method applicable for investigating rapidly varying plasma objects [5,6,[19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Hybrid X-pinches

et al. 2012

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Results from experimental studies of a hybrid X pinch with an initial configuration in the form of a high current diode with conical tungsten electrodes spaced by 1-2 mm and connected to one another with 20 to 100 μm diameter wires are presented. The experiments were carried out at four facilities with a current amplitude from 200 to 1000 kA and front duration from 45 to 200 ns. It is shown that, in spite of their simpler configuration, hybrid X pinches with a short rise time of the current pulse (50-100 ns) are highly competitive with standard X pinches in the generated soft X ray power and the formation of a single hot spot in them is much more stable, while hard X ray emission is almost absent. The possibility of using hybrid X pinches as soft X ray sources for point projection X ray imaging of plasma objects is considered.

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Section: Introductionmentioning

confidence: 91%

Section: Application Of a Hybrid X Pinch As The Main Load For Point Pmentioning

confidence: 99%