$X$-Pinch Experiments on 1-MA “QiangGuang-1” Facility

Wu, Jian; Qiu, Aici; Wu, Gang; Lv, Min; Wang, Liangping; Lei, Tao; Guo, Ning; Han, J. J.; Zhang, Xinjun; Yang, Hailiang; Cong, Peitian; Qiu, Mengtong

doi:10.1109/tps.2010.2042457

Cited by 14 publications

(3 citation statements)

References 16 publications

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“…The final results are shown in figure 3(b-d) showing the dynamics of the Mo wire X-pinch. It is indicated that the sizes of x-ray sources are about 1-2 mm which are roughly in agreement with other results [10,11]. Due to different view angles which are relative to the wire arrays, the x-ray source patterns are different, indicating the three-dimensional information of the x-ray source generated by X-pinch is complex.…”

Section: Jinst 17 P09030supporting

confidence: 88%

Diagnosing X-pinch and cylindrical wire array Z-pinch with an all-optical framing camera on the “QiangGuang-I” facility

Song¹,

Bodong²,

Song³

et al. 2022

J. Inst.

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An all-optical framing camera has been established on the 1-MA “QiangGuang-I” facility for investigating the imploding dynamics of the X-pinch and the cylindrical wire array Z-pinch. This camera measures the photons flux distribution by detecting the photon-induced refractive index changes in the InP semiconductor with a probe laser beam. The InP-based imaging sensor with a 100 nm thick Al film and a 10 μm thick gold transmission grating of 20 μm spatial period was fabricated based on the lithography method. Two sequential frames with 1.5 ns time resolution and 13 ns inter frame separation time can be recorded in one single shot. Framing images indicating the plasma generation and dissipation of the X-pinch and the cylindrical wire array Z-pinch have been obtained, showing that this framing camera is a promising technique for investigating the mechanisms of the Z-pinch and other high energy density physics.

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Section: Jinst 17 P09030supporting

confidence: 88%

Diagnosing X-pinch and cylindrical wire array Z-pinch with an all-optical framing camera on the “QiangGuang-I” facility

Song¹,

Bodong²,

Song³

et al. 2022

J. Inst.

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“…The experiments were conducted on the "Qiangguang I" facility, which is a linear-transformer-driver-based pulsed power generator located at the Northwest Institute of Nuclear Technology, 20 with the peak current and rise time (10%-90% peak current) $1.3 MA and $90 ns, respectively, for a typical wire-array Z-pinch implosion. The main side-on diagnostic instruments included two soft x-ray power meters, which have an almost flat spectral response to photon energies from 50 eV to 1250 eV, to measure the radial radiation powers, an optical streak camera to diagnose the boundary of the tungsten plasma, and a four-frame ultraviolet (UV) laser shadowgraph at a wavelength of 265 nm.…”

Section: Resultsmentioning

confidence: 99%

Numerical and experimental investigations on the interaction of light wire-array Z-pinches with embedded heavy foam converters

Xiao

Ding

et al. 2014

Physics of Plasmas

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The interaction of a light tungsten wire-array Z-pinch with an embedded heavy foam converter, whose mass ratio is typically less than 0.16, is numerically analyzed and experimentally investigated on the 1.3 MA "QiangGuang I" facility. Computational results show that this implosion process can be divided into three stages: acceleration of the tungsten wire-array plasma, collision, and stagnation. The tungsten plasma is accelerated to a high speed by the J Â B force and interacts weakly with the foam plasma in the first stage. Strong energy conversions take place in the second collision stage. When the high speed tungsten plasma impacts on the foam converter, the plasma is thermalized and a radial radiation peak is produced. Meanwhile, a shock wave is generated due to the collision. After the shock rebounds from the axis and meets the W/Foam boundary, the plasma stagnates and the second radial radiation peak appears. The collision and stagnation processes were observed and the two-peak radial radiation pulse was produced in experiments. Increasing the wire-array radius from 4 mm to 6 mm, the kinetic energy of the tungsten plasma is increased, causing a stronger thermalization and generating a higher first radiation peak. Experimental results also showed a higher ratio of the first peak to the second peak in the case of larger wire-array radius. If we add a thin CH film cover onto the surface of the embedded foam converter, the first radiation peak will be hardly changed, because the acceleration of the tungsten plasma is not evidently affected by the film cover. However, the second radiation peak decreases remarkably due to the large load mass and the corresponding weak compression. V C 2014 AIP Publishing LLC. [http://dx.

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“…20 QiangGuang-1 facility is a pulsed power machine composed by a linear-transformerdriver (LTD) in series with several low impedance waterdielectric transmission lines. During the experiments, it provided a peak load current of $1 MA and 10%-90% current rise time of 50-60 ns.…”

Section: A Experimental Setupsmentioning

confidence: 99%

Estimations of Mo X-pinch plasma parameters on QiangGuang-1 facility by L-shell spectral analyses

et al. 2013

Physics of Plasmas

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Plasma parameters of molybdenum (Mo) X-pinches on the 1-MA QiangGuang-1 facility were estimated by L-shell spectral analysis. X-ray radiation from X-pinches had a pulsed width of 1 ns, and its spectra in 2-3 keV were measured with a time-integrated X-ray spectrometer. Relative intensities of spectral features were derived by correcting for the spectral sensitivity of the spectrometer. With an open source, atomic code FAC (flexible atomic code), ion structures, and various atomic radiativecollisional rates for O-, F-, Ne-, Na-, Mg-, and Al-like ionization stages were calculated, and synthetic spectra were constructed at given plasma parameters. By fitting the measured spectra with the modeled, Mo X-pinch plasmas on the QiangGuang-1 facility had an electron density of about 10 21 cm À3 and the electron temperature of about 1.2 keV. V C 2013 AIP Publishing LLC.

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$X$-Pinch Experiments on 1-MA “QiangGuang-1” Facility

Cited by 14 publications

References 16 publications

Diagnosing X-pinch and cylindrical wire array Z-pinch with an all-optical framing camera on the “QiangGuang-I” facility

Diagnosing X-pinch and cylindrical wire array Z-pinch with an all-optical framing camera on the “QiangGuang-I” facility

Numerical and experimental investigations on the interaction of light wire-array Z-pinches with embedded heavy foam converters

Estimations of Mo X-pinch plasma parameters on QiangGuang-1 facility by L-shell spectral analyses

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