Magnetized hybrid X-pinch

Пикуз, С. А.; Gourdain, P. A.; Shelkovenko, T. A.; Tilikin, I. N.; Greenly, J. B.; Atoyan, L.; Hammer, D. A.

doi:10.1063/1.4904793

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…However, it should be noted that the presence of the gap in the images obtained using the SSW camera is more typical of standard Х-pinches. In hybrid Х-pinches [14][15][16][17][18], the distance between the regions radiating in the SXR and HXR ranges is often less than 50 μm [19]. Measurements of the size of the Х-pinch region radiating in the SXR range by using the SSW camera gave a value on the order of 5-20 μm, which agrees with measurements performed using pinhole cameras.…”

Section: Spatial Characteristics Of the X-pinch Hsmentioning

confidence: 75%

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X-pinch. Part II

2015

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Results of experimental studies of the Х-pinch since its invention and implementation in 1982 at the Lebedev Physical Institute are presented. The review consists of two parts. The first part briefly outlines the history of creation and studies of Х-pinches, describes the diagnostic techniques and devices developed during these studies, and presents the main results obtained in studying the physical processes occurring in the Х-pinch. The second part is devoted to the results of detailed studies of the spatial, temporal, and spectral characteristics of the X-pinch hot spot-the region where the highest plasma parameters are achieved and which is a source of X-ray emission with extreme parameters. Some results of Х-pinch simulations are also presented.

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Section: Spatial Characteristics Of the X-pinch Hsmentioning

confidence: 75%

“…They are observed in the form of a doublet, the distance between the components being 0.002-0.004 Å (for Z~ [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: х-Pinch Spectral Characteristicsmentioning

confidence: 99%

X-pinch. Part II

2015

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Implosion dynamics and radiation characteristics of preconditioned hybrid X-pinch driven by double pulse current

Chen

Zhang

et al. 2020

Physics of Plasmas

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Preconditioned hybrid X-pinch (HXP) experiments have been performed on the Qin-1 facility to investigate the effect of the prepulse current on the implosion dynamics and radiation characteristics. HXPs with molybdenum wires of ∼1.2 mm in length and 25 to 50 μm in diameter have been tested. Driven by the prepulse current, the molybdenum wire is heated to a core-corona structure with a Joule energy deposition of 0.5–4.8 eV/atom, which is smaller than its atomization enthalpy. The radial expansion velocity of the wire core is 0.5–3 km/s. The main current of 450 kA/400 ns is applied ∼610 ns after the prepulse current. The implosion dynamics of the preconditioned HXP is characterized by two-shell structure implosion. Immediately after the main current starts, the current mainly passes through the corona plasma located in a large radius, and the implosion of corona plasma lasts for ∼100 ns until the corona plasma collides with the wire core. Then, the current distribution switches from the corona plasma to the wire core, which results in the onset of implosion of the wire core. The implosion of the wire core generates hot spots and x-ray radiation. The calculated inductance and radius of the current sheath agree with the experimental results. The corona plasma performs as a current switch, which allows the main current passing through the wire core after 100 ns. It indirectly contributes to sharpening the main current used for implosion of the wire core. A single hot spot with x-rays over 2.5 keV is measured using the preconditioned HXP.

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Axial confinement of wire array Z-pinch precursor plasmas by a pulsed magnetic mirror field

Chen,

Lavine,

Potter

et al. 2024

Physics of Plasmas

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A novel wire-array Z-pinch platform has been developed to study the effect of a pulsed magnetic mirror field on a collisional high energy density plasma. The mirror is driven in series with the Z-pinch target and, therefore, scales with driver current. Axial confinement is observed based on visible imaging and axial flow velocity measurements. The presence of axial compressing J ×B force is determined indirectly based on Thomson scattering and interferometry measurements and corroborated by three-dimensional extended-MHD simulations. Compared to non-magnetized wire array Z-pinch, a modified pulsed mirror configuration is observed to increase precursor plasma thermal energy density by about 30%. If optimized, such a configuration could potentially improve magnetized liner inertial fusion performance by reducing axial plasma end loss.

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Magnetized hybrid X-pinch

Abstract: A source of hard X-ray radiation based on hybrid X pinches

Cited by 4 publications

References 5 publications

X-pinch. Part II

X-pinch. Part II

Implosion dynamics and radiation characteristics of preconditioned hybrid X-pinch driven by double pulse current

Axial confinement of wire array Z-pinch precursor plasmas by a pulsed magnetic mirror field

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