Observations of plasma dynamics in a gas-embedded compressional Z-pinch

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

doi:10.1109/27.725148

Cited by 7 publications

(9 citation statements)

References 8 publications

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“…The Chilean operation has begun implementing and developing diagnostics in a conventional PF configuration in order to characterize the neutron emission. Then, after getting the experimental expertise with SPEED2, new experiments in a quasistatic Z-pinch [64][65][66][67], gas puffed PF and wires array will be performed to extend the device capabilities. Also, SPEED2 and SPEED4 will be used in the development of applications for radiation pulses from hot, dense plasmas, including x-ray and neutron radiography, detection of substances and micro-radiography for applications to microelectronic lithography and diagnostics of nanostructures.…”

Section: Preliminary Results In Speed2 and Speed4mentioning

confidence: 99%

New trends and future perspectives on plasma focus research

Soto

2005

Plasma Phys. Control. Fusion

294

211

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This paper includes a brief overview of the contributions and results of several groups working in plasma focus (PF) devices around the world in the last few years. In section 2 a summary of the most important results of the dense transient plasma research programme of the Comisión Chilena de Energía Nuclear is presented. An approach to an integrated vision of the present PF research status is presented in the next section. Some parameters that remain practically constant in PF devices that operate in a wide range of energies from 1 MJ to tens of joules are discussed. These parameters ('plasma energy density parameter' and 'drive parameter') are used as a design tool to achieve an ultra-miniature pinch focus device operating at energies less than 1 J. Preliminary results of such an ultra-miniature device are presented. Applications to non-destructive tests, detection of substances, pulsed radiation in biology and material sciences are also briefly discussed in this paper.

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Section: Preliminary Results In Speed2 and Speed4mentioning

confidence: 99%

New trends and future perspectives on plasma focus research

Soto

2005

Plasma Phys. Control. Fusion

294

211

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“…The Chilean operation has begun implementing and developing diagnostics in a conventional plasma focus configuration in order to characterized the neutron emission. Then, after getting the experimental expertise with SPEED2, new experiments in a quasi-static Z-pinch [15][16][17][18], gas puffed plasma focus, and wires array will be developed to extend the device capabilities. Also SPEED2 and SPEED4 will be used in the development of applications of radiation pulses from hot, dense plasmas, including Xray and neutron radiography, detection of substances, microradiography for applications to microelectronic lithography and diagnostics of nanostructures.…”

Section: Speed2 and Speed4 Generatorsmentioning

confidence: 99%

Research on pinch plasma focus devices of hundred of kilojoules to tens of joules

Soto¹,

Silva²,

Moreno³

et al. 2004

Braz. J. Phys.

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At present the Plasma Physics and Plasma Technology Group of the Comisión Chilena de Energía Nuclear (CCHEN) has the experimental facilities in order to study fast dense transient discharges in a wide range of energy and current, namely: I) energy from hundred of kilojoules to tens of joules, II) current from megaamperes to tens of kiloamperes. Also several diagnostics have been implemented. An overview of the work being carried out on dense pinch plasma focus discharges at the Comisión Chilena de Energía Nuclear is presented. The plasma energy density and scaling laws for the neutron yield are discussed. Possible applications of the radiation emitted are also discussed.

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“…Experiments in gas-embedded Z-pinches were carried out at Pontificia Universidad Cato´lica de Chile [4][5][8][9][10], using a small pulse power generator, 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 Á 10 12 A/s.…”

Section: Experimental Observationsmentioning

confidence: 99%

“…The Alfve´n velocity, v a ; for a Z-pinch can be estimated from the measured current I and the line density N [7], and is given by v a ¼ 3:88 Á 10 9 I=N 1=2 for H 2 and v a ¼ 1:94 Á 10 9 I=N 1=2 for He. In both cases the radial velocity is less than the Alfve´n velocity, thus the pinch can be considered as quasi-static [4][5][8][9][10]12].…”

Section: Experimental Observationsmentioning

confidence: 99%

“…In fiber pinches those models are applied after the fiber has been fully ionized. On the contrary, in gas-embedded Z-pinch experiments, it has been observed that the line density increases as the pinch evolves, indicating that there is a positive input flux of ionized particles into the pinch [3][4][5][8][9][10] and the models described in references [6,7] are not applicable.…”

Section: Introductionmentioning

confidence: 99%

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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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Observations of plasma dynamics in a gas-embedded compressional Z-pinch

Cited by 7 publications

References 8 publications

New trends and future perspectives on plasma focus research

New trends and future perspectives on plasma focus research

Research on pinch plasma focus devices of hundred of kilojoules to tens of joules

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

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