Inductive energy technology for pulsed intense X-ray sources

Ware, K.; Filios, P.G.; Gullickson, R.L.; Rowley, J.E.; Schneider, R.; Summa, W.J.; Vitkovitsky, I. M.

doi:10.1109/27.602487

Cited by 19 publications

(2 citation statements)

References 14 publications

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“…The incredibly simple design of a plasma opening switch (POS) makes such a device very attractive for terawatt pulsed power technologies (Ware et al. 1997). Conventionally, it is a vacuum coaxial segment filled with a fully ionized plasma (figure 1) which, being injected into the segment with a directed velocity , can provide conduction to an inductive energy store (closed state) with fast energy delivery to a load (open state).…”

Section: Introductionmentioning

confidence: 99%

Self-magnetic insulation in plasma opening switches

Loginov

2020

J. Plasma Phys.

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The paper analyses the penetration of a magnetic field into the plasma bridge of nanosecond and microsecond opening switches. For switches with a conduction time of ~100 ns, simple formulae are derived to estimate the magnetic field velocity in collisionless and collisional plasmas. It is shown that in both cases this velocity is determined by the magnetic field rise rate to plasma density ratio raised to the power of 1/2. As the conduction time is increased to ~1 ${\rm \mu}$ s, the field velocity starts to depend on the plasma aggregation by a magnetic piston. At the same time, irrespective of the conduction time, the electron flow velocity is limited by the radial drift velocity in crossed magnetic and polarization electric fields. Such a limitation suppresses the current channel conductivity with respect to the Spitzer value by a factor equal to the electron magnetization parameter raised to one or another power. On completion of the conduction phase, the rate of rise of the switch resistance is proportional to the electron drift velocity. The peak switch voltage obtained in calculations is compared with its values recorded in experiments on mega-ampere current switching. A procedure is also presented for calculating the switch parameters to obtain the maximum possible voltage in the phase of current cutoff.

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Section: Introductionmentioning

confidence: 99%

Self-magnetic insulation in plasma opening switches

Loginov

2020

J. Plasma Phys.

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“…F OR THE CREATION of high-power plasma radiation sources in the terawatt range with pulse durations within ∼10-100 ns, pulse-compression technology is employed using an intermediate inductive store with microsecond charging time and an opening device that is capable of rapidly switching the stored energy to the radiating load [1]. Realization of this technology requires the development of a current interrupter that can ensure at least tenfold compression of the power pulse [2].…”

Section: Introductionmentioning

confidence: 99%

Plasma and Magnetic-Field Dynamics in Conduction Phase of Opening Switch

Loginov

2009

IEEE Trans. Plasma Sci.

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Self-consistent plasma and magnetic-field dynamics in the plasma-opening-switch conduction phase is considered within the framework of 1-D single-fluid magnetohydrodynamics. The profiles of plasma-flow parameters and magnetic field in the switch current channel, depending on plasma conductivity, are obtained. An analytical solution for the magnetic-field profile in the current channel is presented. The energy partition in the current channel is calculated. The issue of plasma conductivity during the magnetic-field pulse is discussed.Index Terms-Current channel, energy partitioning, magneticfield distribution, plasma opening switch, shock wave.

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Simulation of the soft X-radiation yield for plasma loads with the use of a 2-D snow-plow model

Oreshkin¹,

Shishlov²

1999

Russ Phys J

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Inductive energy technology for pulsed intense X-ray sources

Cited by 19 publications

References 14 publications

Self-magnetic insulation in plasma opening switches

Self-magnetic insulation in plasma opening switches

Plasma and Magnetic-Field Dynamics in Conduction Phase of Opening Switch

Simulation of the soft X-radiation yield for plasma loads with the use of a 2-D snow-plow model

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