Gas Embedded Compressional Z-Pinch In H2 and D2

Soto, Leopoldo; Chuaqui, H.; Favre, M.; Saavedra, R.; Wyndham, E.; Skowronek, M.; Romeas, P.; Aliaga-Rossel, R.; Mitchell, I. H.

doi:10.1007/978-94-011-4758-3_50

Cited by 6 publications

(15 citation statements)

References 2 publications

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“…Experiments in gas-embedded Z-pinches were carried out in Chile some years ago [24][25][26][27], driven by a small pulse power generator, namely a Marx bank (400 kV) coupled to a water transmission line (1.5 , 300 kV, 120 ns double transit time). The current rate was approximately 2 × 10 12 A s −1 and the peak current achieved was 150-180 kA.…”

Section: Gas-embedded Z-pinchmentioning

confidence: 99%

“…The current rate was approximately 2 × 10 12 A s −1 and the peak current achieved was 150-180 kA. The discharges were performed in H 2 and He at 1/3 atmospheres and several preionization schemes were studied [24][25][26][27]. In particular, the most interesting results were obtained in a double column pinch.…”

Section: Gas-embedded Z-pinchmentioning

confidence: 99%

“…Experimentally, it has been observed that for Z-pinch discharges with a substantially lower value of S, no instabilities appear. From the values of S, obtained at the early stage in discharges studied experimentally [24][25][26][27], it is apparent that they are resistive at early stages. In addition, for the particular case of a double column pinch, which presents enhanced stability, the value observed for the ratio of Larmor radius a i , over pinch radius r p was a i /r p ∼ 0.1-0.2 at later stages (a i /r p = 8.08 × 10 8 N −1/2 for a pinch in deuterium [25][26][27]).…”

Section: Gas-embedded Z-pinchmentioning

confidence: 99%

See 2 more Smart Citations

Dense transient pinches and pulsed power technology: research and applications using medium and small devices

Soto¹,

Pavez²,

Moreno³

et al. 2008

Phys. Scr.

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The Plasma Physics and Plasma Technology Group of the Chilean Nuclear Energy Commission (CCHEN) has, since about ten years ago, used plasma production devices to study dense hot plasmas, particularly Z-pinches and plasma foci (PFs). In the case of Z-pinches, the studies include studies on the dynamics and stability of gas-embedded Z-pinches at currents of thermonuclear interest, and preliminary studies on wire arrays. For PF research, the aim of the work has been to characterize the physics of these plasmas and also to carry out the design and construction of smaller devices-in terms of both input energy and size-capable of providing dense hot plasmas. In addition, taking advantage of the experience in pulsed power technology obtained from experimental researches in dense transient plasmas, an exploratory line of pulsed power applications is being developed. In this paper, a brief review listing the most important results achieved by the Plasma Physics and Plasma Technology Group of the CCHEN is presented, including the scaling studies, PF miniaturization and diagnostics and research on Z-pinches at currents of thermonuclear interest. Then, exploratory applications of pulsed power are presented, including nanoflashes of radiation for radiography and substances detection, high pulsed magnetic fields generation and rock fragmentation.

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Section: Gas-embedded Z-pinchmentioning

confidence: 99%

Section: Gas-embedded Z-pinchmentioning

confidence: 99%

Section: Gas-embedded Z-pinchmentioning

confidence: 99%

See 1 more Smart Citation

Dense transient pinches and pulsed power technology: research and applications using medium and small devices

Soto¹,

Pavez²,

Moreno³

et al. 2008

Phys. Scr.

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show abstract

“…From the values of S, obtained at early stage in discharges studied experimentally [2][3][4], it is apparent that they are resistive at early stages [3]. It has been theoretically conjectured that there is a threshold for the stabilization due to resistive effects, corresponding to Lundquist number Sa100 (S=3.87x10 23 I 4 aN -2 , for a pinch in deuterium.…”

Section: Stability Requirementsmentioning

confidence: 99%

“…Experiments in gas-embedded Z-pinches were carried out in Chile some years ago [2][3][4], driven by a small pulse power generator, a Marx bank (400 kV) coupled to a water transmission line (1.5 :, 300kV, 120ns double transit time). The current rate was approximately 2·10 12 A/s and the peak current achieves was 150-180kA.…”

Section: Introductionmentioning

confidence: 99%

A Gas Embedded Z-pinch Driven by SPEED2 Generator

Soto¹,

Pavez²,

Moreno³

et al. 2006

AIP Conference Proceedings

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A gas embedded Z-pinch has been implemented using the SPEED2 generator (4.1 PF equivalent Marx generator capacity, 300 kV, 4 MA in short circuit, 187 kJ, 400 ns rise time, dI/dta10 13 A/s). Initial conditions to produce a gas embedded z-pinch with enhanced stability by means resistive effects and by finite Larmor radius effects were obtained and electrodes were constructed in order to obtain a double column Z-pinch and a hollow discharge. Experiments were carried out in deuterium at mega amperes currents . Current derivative and voltage signals have been obtained. In addition interferograms have been obatined using a pulse Nd-YAG laser (8ns FWMH at 532nm). Preliminary results on neutron emission were also obtained.

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Evolution of a Gas Embedded Z-pinch: A Quasi Static Zero Dimensional Approach

Soto

Clausse

2003

Phys. Scr.

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In gas-embedded Z pinches, high electric discharges are induced in dense gases at atmospheric range pressures. An intriguing phenomenon observed in experiments conducted under these conditions is the radial expansion of the pinch. In this article, a model of Z pinch is derived, which succeeds in explaining expansive Z pinches in terms of variations of the number of particles confined by the pinch. The model is compared with experimental results showing excellent agreement.

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Gas Embedded Compressional Z-Pinch In H2 and D2

Cited by 6 publications

References 2 publications

Dense transient pinches and pulsed power technology: research and applications using medium and small devices

Dense transient pinches and pulsed power technology: research and applications using medium and small devices

A Gas Embedded Z-pinch Driven by SPEED2 Generator

Evolution of a Gas Embedded Z-pinch: A Quasi Static Zero Dimensional Approach

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