X-pinch source of subnanosecond soft X-ray pulses based on small-sized low-inductance current generator

Mesyats, G.; Shelkovenko, T. A.; Ivanenkov, G. V.; Агафонов, А. В.; Savinov, S. Yu.; Pikuz, S. A.; Tilikin, I. N.; Ткаченко, С. И.; Chaikovskii, S. A.; Ratakhin, N. A.; Fedushchak, V. F.; Oreshkin, V. I.; Fedyunin, A. V.; Russkikh, A. G.; Labetskaya, N. A.; Artemov, A. P.; Hammer, D. A.; Sinars, Daniel Brian

doi:10.1134/s1063776110090049

Cited by 57 publications

(22 citation statements)

References 17 publications

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“…Within a certain range of matched initial conditions [13], a so called hot spot (HS) forms in the vicinity of the X pinch crossing point. It is one of the brightest SXR sources emitting in the photon energy range of 1-10 keV and possessing unique parameters: a micron size radiating region and a picoseconds pulse duration [6,[14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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: 99%

Hybrid X-pinches

et al. 2012

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“…The X generator, composed by the capacitor bank and multigap spark switches, 12 and the small size pulse-accumulating source (SPAS), composed by capacitor-switch assemblies, 13 were constructed at High Current Electronics, Russian Academy of Sciences for X-pinch experiments. Another type is the fast linear transformer driver (LTD) which is currently being considered as a basis for future ignitionscale pulsed-power devices.…”

Section: Introductionmentioning

confidence: 99%

Aluminum and tungsten X-pinch experiments on 100 kA, 100 ns linear transformer driver stage

Sun

et al. 2011

Physics of Plasmas

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X-pinch experiments have been carried out on a 100 kA, 100 ns linear transformer driver stage recently built up. The X-pinches exhibited a source size of about 10 lm, a pulse duration of 3 ns, 3-5 keV radiation energy of 3.9 mJ, and a burst time jitter of tens of nanosecond with the 2-wire 8 lm W X-pinch load. The generator output current and the X-pinch characteristics depended on the X-pinch wire materials in the tests. X-ray backlighting images from the insects showed the significant phase-contrast effect.

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“…By employing a small, dedicated low inductance pulser to drive the xpinch, such as the one described by Mesyats et al, 19 one could couple this diagnostic to a wide range of laser plasma and pulsed power experiments. Examples include the study of conditions in hydrodynamic 20,21 and magnetically driven jets, [22][23][24] materials in WDM state, 11,12 and the structure of radiative shocks.…”

Section: Resultsmentioning

confidence: 99%

High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal

Knapp

Pikuz

Shelkovenko

et al. 2011

Review of Scientific Instruments

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We present here the use of absorption spectroscopy of the continuum radiation from x-pinch-produced point x-ray sources as a diagnostic to investigate the properties of aluminum plasmas created by pulsed power machines. This technique is being developed to determine the charge state, temperature, and density as a function of time and space under conditions that are inaccessible to x-ray emission spectroscopic diagnostics. The apparatus and its characterization are described, and the spectrometer dispersion, magnification, and resolution are calculated and compared with experimental results. Spectral resolution of about 5000 and spatial resolution of about 20 μm are demonstrated. This spectral resolution is the highest available to date in an absorption experiment. The beneficial properties of the x-pinch x-ray source as the backlighter for this diagnostic are the small source size (<5 μm), smooth continuum radiation, and short pulse duration (<0.1 ns). Results from a closely spaced (1 mm) exploding wire pair are shown and the general features are discussed.

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X-pinch source of subnanosecond soft X-ray pulses based on small-sized low-inductance current generator

Cited by 57 publications

References 17 publications

Hybrid X-pinches

Hybrid X-pinches

Aluminum and tungsten X-pinch experiments on 100 kA, 100 ns linear transformer driver stage

High resolution absorption spectroscopy of exploding wire plasmas using an x-pinch x-ray source and spherically bent crystal

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