On the mechanism of heavy-impurity plasma filling ()

Volosov, V.I.; Abdrashitov, G. F.; Bekhtenev, A.A.; Kubarev, V. V.; Pal'chikov, V.E.; Yudin, Yu.N.

doi:10.1016/0022-3115(84)90392-1

Cited by 7 publications

(8 citation statements)

References 2 publications

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“…A substantial reduction of the fraction of heavy impurities, compared with Ref. [3], is provided by a protection lattice composed of Ti rings, on the inner liner.…”

Section: Neutral Gasmentioning

confidence: 93%

“…The inner liner surface looks like a lattice 1 The first results on the possibility of stabilization of rotating plasmas by velocity, shear or line tying effects were published in Refs [7,8], but the investigations on the real stability conditions were reported in Refs [9,10]. consisting of titanium rings to avoid the S-discharge [3]. Each ring is 50-70 mm high and 0.5 mm thick, and the rings are situated at a distance of about 10 mm from each other.…”

Section: Psp-2 Devicementioning

confidence: 99%

“…By estimation, the amount of gas flowing into the working volume is 0.3-0.7 of that stored in the gas valves. With the chamber volume (0.6 m 3 ) and the delay time of the discharge ignition taken into account, the average density of the atomic neutral gas in the discharge was roughly 1 x 10 12 cm" 3 . This value may also be derived from another, independent estimation (see Sections 2.7 and 3.1).…”

Section: Neutral Gasmentioning

confidence: 99%

“…A drastic decrease in the pressure (several times lower than the standard) does not ignite the discharge: under a pressure higher than 5 x 10 l2 cm" 3 , either breakdowns take place on the electrodes since the discharge ignition conditions on the left hand branch of Paschen's curve near the electrodes are fulfilled [16] or breakdowns of the S-discharge type occur in the plasma volume, 2 The heavy impurity content during the discharge was controlled by the intensity of spectral lines, on the assumption that T e = 300 eV. The amount of impurities was estimated from the results of measurements in special test discharges where the amount of metallic atoms was easy to estimate [3].…”

Section: Ignition and Quenching Of Dischargementioning

confidence: 99%

“…The experiments to be described below were intended to solve a number of fundamental problems associated with the creation of thermonuclear systems on the basis of a rotating plasma trap as well as to investigate analogous systems with a number of full scale parameters. The experiments were performed on the PSP-2 device [1][2][3] -one of the versions of similar systems -, the rotating plasma trap using an electrode system placed within the mirror region.…”

Section: Introductionmentioning

confidence: 99%

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Hot roating plasma in the PSP-2 experiment

et al. 1991

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Studies have been carried out of an MHD stable rotating plasma with the following parameters: mean ion energy up to 40 keV in the laboratory frame of reference or up to 20 keV in the rotating frame of reference, plasma density 3 × 1011 cm−3 (and up to 1012 cm−3 in special regimes), mean energy of electrons 0.1−1.0 keV (non-Maxwellian spectrum), lifetime of ions 10−4 s (determined by charge exchange), and plasma volume 0.1 m3, in experiments on the PSP-2 device. The field strength in the plasma was about 20 kV/cm, and the total voltage achieved 0.5 MV. The MHD stabilization conditions are in agreement with the theoretical estimates. A hot plasma was created in a high voltage E⃗ × B⃗ discharge, the cold hydrogen gas having been puffed without any heating or plasma injection systems.

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“…A substantial reduction of the fraction of heavy impurities, compared with Ref. [3], is provided by a protection lattice composed of Ti rings, on the inner liner.…”

Section: Neutral Gasmentioning

confidence: 93%

Section: Psp-2 Devicementioning

confidence: 99%

Section: Neutral Gasmentioning

confidence: 99%

Section: Ignition and Quenching Of Dischargementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hot roating plasma in the PSP-2 experiment

et al. 1991

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Setup for isotope separation by the ICR-heating method

et al. 2000

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Universal metal ion source

Churkin

Volosov

Steshov

1998

Review of Scientific Instruments

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The metal ion source based on the magnetic trap with crossed fields (radial electrical and axial magnetic) is considered. This source formes plasma flow with magnetized heavy (metal) ions flowing along the longitudinal magnetic field. The self-supporting heavy ion discharge is existed in the source. The working substance is a cathode material which can be any conducting material. The operating principles and the features of the source are discussed. The plasma flows consisted of various metal ions (Cu, Ni, Ti) were experimentally obtained. The main parameters and the dependences of the titanium ion source are presented in detail. The typical parameters of this plasma flow are following: longitudinal velocity of 2–3×105 cm/s, ion transversal energy of 20–80 eV, average plasma density of 1012 cm−3; electron temperature of 40–60 eV; total ion current of plasma flow reach up to 3.6 A in pulse mode (discharge duration of 4–10 ms) of the source. The application of the source for plasma separation process is discussed.

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On the mechanism of heavy-impurity plasma filling ()

Cited by 7 publications

References 2 publications

Hot roating plasma in the PSP-2 experiment

Hot roating plasma in the PSP-2 experiment

Setup for isotope separation by the ICR-heating method

Universal metal ion source

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