Foam liner driven by a plasma focus current sheath

Scholz, M.; Karpinski, L.; Stępniewski, W.; Branitski, A.V.; Fedulov, M. V.; Medovschikov, S. F.; Nedoseev, S. L.; Smirnov, V. P.; Zurin, M. V.; Szydlowski, A.

doi:10.1016/s0375-9601(99)00699-4

Cited by 18 publications

(13 citation statements)

References 2 publications

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“…Here n 0H depends on the initial pressure of hydrogen filling the PF-24 vacuum chamber, and n 0B on the ablated boron mass from the sample, depending on the laser energy and the characteristic expansion time t 0 [Eq. (10)]. Figure 6a shows the n 0B =n 0H ratio dependent on t 0 for two different working gas pressures.…”

Section: Resultsmentioning

confidence: 99%

“…A good solution to this problem seems to be the decoupling a final phase of the PF discharge from the initial one. A commonly used method of modifying a composition of plasma and its density in a compressed plasma column is the gas injection method through a high-speed electromagnetic valve located in the PF anode [7][8][9] or the installation of a coaxial liner on the anode front [10]. An interesting solution was also to use a dust cloud instead of gas injection in the area in front of the internal electrode [11].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the method is limited to materials that are in a gaseous state under normal conditions. To use materials which do not occur as a gas under normal conditions, the foam liner or dust clouds was proposed to use in the PF device [10,11]. However, there is a limitation on the liner density, which far exceeds that of the current sheath even when the PF discharge is initiated in a heavy gas.…”

Section: Introductionmentioning

confidence: 99%

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On the Possibility of Initiating the Proton–Boron Nuclear Fusion Reaction in the Plasma-Focus Device

et al. 2019

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In this paper, the possibilities to perform aneutronic fusion in Plasma Focus (PF) devices have been presented. For this purpose, an idea of doping plasma by means of laser ablation of a solid boron target during discharge in PF-24 was presented. Some estimates have been made, based on the processes occurring during the discharge in the PF system with gas injection using a fast gas valve, indicating that this method allows the generation of hydrogen-boron plasma. The yield of the 11 B(p,a)aa reaction was calculated. The results presented in this paper show that this yield is high enough to register and measure the alpha particles emitted from the plasma column consisting boron and hydrogen. The estimates were made for the parameters characteristic for PF-24.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the Possibility of Initiating the Proton–Boron Nuclear Fusion Reaction in the Plasma-Focus Device

et al. 2019

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“…Many plasma focus devices have since been built by other investigators, but all broadly conform to one of the two original geometries, and can be classified as being either of the Mather or Filippov type [3,4]. These devices have been built with stored bank energy ranging from 1 kJ to 1 MJ with consequent variation in physical sizes of the device [5,6,7,8,9]. The plasma focus is well known as both a source of fusion neutrons and a source of x-rays [10,11,12,13].…”

Section: Introductionmentioning

confidence: 99%

Design and Construction of a 20- KJ Filippov-Type Plasma Focus

Ghanei¹,

Abdi

Shirani³

2014

AJPA

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UIPFF1 is a new Filippov-type plasma focus facility, constructed and built in Esfahan University. This paper reports on the design of the UIPFF1. The main stages of the construction, design and the preliminary X-ray detection tests on the UIPFF1 are mentioned concisely. Measurement results show that in a typical discharge experiment, the discharge current =181 kA, period of current signal = 7.9 µs, the total inductance of the device =132 nH and electrical resistance of the circuit = 77 mΩ. The calibration factor is measured as 121 kA/V by averaging from data obtained with a set of 5 experiments. Temporal changes in plasma focus discharge current, confirmed occurrence pinch at a specific pressure of argon, neon and nitrogen gases.

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“…Later on, numerous PF experiments were carried out at higher current in order to determine scaling laws, and particularly a neutron yield as a function of stored energy. The large megajoule PF-1000 facility has been operated at the IPPLM for about four years, and until now the greatest efforts have been devoted to experimental studies dealing with the optimization of this device [1,2].…”

Section: Introductionmentioning

confidence: 99%

Results of recent experiments with Pf-1000 facility equipped with new large electrodes

et al. 2000

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The paper presents a modified PF-1000 megajoule plasma-focus (PF) facility operated at IPPLM in Warsaw. In order to study PF discharges at higher discharge current, several diagnostics tools have been developed and tested. The preliminary studies of current sheath dynamics, and measurements of the discharge currents, X-ray, fast ion, and neutron emission at higher energy levels, are also reported.

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Foam liner driven by a plasma focus current sheath

Cited by 18 publications

References 2 publications

On the Possibility of Initiating the Proton–Boron Nuclear Fusion Reaction in the Plasma-Focus Device

On the Possibility of Initiating the Proton–Boron Nuclear Fusion Reaction in the Plasma-Focus Device

Design and Construction of a 20- KJ Filippov-Type Plasma Focus

Results of recent experiments with Pf-1000 facility equipped with new large electrodes

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