Controlled Thermonuclear Reactions

Art︠s︡imovich, L. A.; Brown, Sanborn C.

doi:10.1119/1.1971192

Cited by 33 publications

(77 citation statements)

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“…Noise was recorded many years ago when the upper bandwidth of the oscilloscopes used in experiments was very low. It was proposed to cut such noises with the help of radio engineering filters (Artsimovich 1964). The question remains unanswered: how can instrumental noise affect the transfer coefficient, which is determined by the density of electrons and the frequency of their collisions with particles, decreasing with increasing electric field strength, and not increasing as the 'effective frequency' according to the model (Artsimovich 1964)?…”

Section: On Ion-acoustic Interpretation Of Anomalous Resistancementioning

confidence: 99%

“…It was proposed to cut such noises with the help of radio engineering filters (Artsimovich 1964). The question remains unanswered: how can instrumental noise affect the transfer coefficient, which is determined by the density of electrons and the frequency of their collisions with particles, decreasing with increasing electric field strength, and not increasing as the 'effective frequency' according to the model (Artsimovich 1964)? The real reasons for the decrease in plasma conductivity, its anomalous diffusion across the magnetic field and the appearance of fast particle fluxes in discharges can only be established through experiments.…”

Section: On Ion-acoustic Interpretation Of Anomalous Resistancementioning

confidence: 99%

“…However, in experiments on high-current self-contracting discharges, it was also not possible to carry out the fusion reaction. In experiments on pinch discharges, neutrons were registered, the generation mechanism of which has an accelerative character (Artsimovich 1964;Vikhrev & Korolev 2007).…”

Section: Introductionmentioning

confidence: 99%

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On the mechanism of anomalous phenomena in current-carrying magnetized plasma

Oreshko

2023

J. Plasma Phys.

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The explanation of the mechanisms of anomalous resistance and diffusion of plasma, as well as the generation of fast particles, is given from a unified position on the basis of experimental results obtained in plasma in a magnetically isolated diode of an electron accelerator with a microsecond pulse duration. It is shown that oscillations of the potential and current in plasma with current occur by charge separation and the formation of electric domains with a strong field. Electric domains are generated by means of runaway electrons resulting from the redistribution of the current density and its channelling in the current-carrying plasma. An increase in plasma resistance occurs due to a decrease in the number of electrons in the current-conducting state, since some of the plasma electrons pass into layers of excess negative charge of electric domains. The speed of movement of electrons in the composition of the electric domain is much lower than the velocity of electrons in the conducting state. The nucleation of domains is accompanied by microwave emission. Quasi-neutrals in whole electrical domains are injected into the region of the anode wall. The destruction of domains leads to the appearance of plasma channels between the anode and cathode plasma. The transverse electromagnetic waves generated during the nucleation of domains capture charged particles and inject them in a direction that is perpendicular to the insulating longitudinal magnetic field. Plasma turbulence occurs due to charge separation and the generation of electrical domains that create channels between the plasma and the chamber wall, as well as generating fluxes of fast particles.

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Section: On Ion-acoustic Interpretation Of Anomalous Resistancementioning

confidence: 99%

Section: On Ion-acoustic Interpretation Of Anomalous Resistancementioning

confidence: 99%

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On the mechanism of anomalous phenomena in current-carrying magnetized plasma

Oreshko

2023

J. Plasma Phys.

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“…Here we mean (in addition to strongly magnetized electron heat conduction) ion heat conduction and estimations on Bohm diffusion (see, for example, Artsimovich 1961). Possible plasma pollution with admixtures from chamber walls essentially can effect the plasma cooling rate.…”

Section: Introductionmentioning

confidence: 99%

Possibility of low-dense magnetized DT plasma ignition threshold achievement in a MAGO system

Buyko¹,

Garanin²,

Mokhov³

et al. 1997

Laser Part. Beams

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The MAGO concept using the thermonuclear target with DT gas preliminary heating up to kiloelectronvolt range temperatures, which sufficiently enables the reduction of requirements of the compression rate (to 10 km/s) and the compression degree (to several hundreds) of the target, is investigated. The MAGO chamber with the Laval supersonic annular nozzle is used for plasma preheating. In this chamber magnetized plasma is accelerated up to 1000-km/s velocities and heated by collisionless shock waves. Systems with liner and magnetic compression are considered for the subsequent plasma compression. Energizing of a real-size system can be supplied by the magnetic flux compression generators with energy 100-500 MJ. Experiments close to the threshold of ignition can be conducted proportionally in 2-3 times reduced systems. Then the energy required will be 10-30 times less than in a real-size system.

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“…Anderson in his paper [5] photographed line spectra and estimated the temperature of such a plasma 𝑇 = 2 ⋅ 10 4 K, which is close to the temperature of stellar atmospheres. There are also known attempts to use this plasma in experiments on the problem of controlled thermonuclear fusion [6].…”

Section: Introductionmentioning

confidence: 99%