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Relevant bibliographies by topics / Runaway companion plasma

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Academic literature on the topic 'Runaway companion plasma'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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Journal articles on the topic "Runaway companion plasma"

1

Reux, C., C. Paz-Soldan, N. Eidietis, et al. "Physics of runaway electrons with shattered pellet injection at JET." Plasma Physics and Controlled Fusion 64, no. 3 (2022): 034002. http://dx.doi.org/10.1088/1361-6587/ac48bc.

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Abstract Runaway electrons (REs) created during tokamak disruptions pose a threat to the reliable operation of future larger machines. Experiments using shattered pellet injection (SPI) have been carried out at the JET tokamak to investigate ways to prevent their generation or suppress them if avoidance is not sufficient. Avoidance is possible if the SPI contains a sufficiently low fraction of high-Z material, or if it is fired early in advance of a disruption prone to runaway generation. These results are consistent with previous similar findings obtained with Massive Gas Injection. Suppressi

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2

Sridhar, Navin, and Brian D. Metzger. "Radio Nebulae from Hyperaccreting X-Ray Binaries as Common-envelope Precursors and Persistent Counterparts of Fast Radio Bursts." Astrophysical Journal 937, no. 1 (2022): 5. http://dx.doi.org/10.3847/1538-4357/ac8a4a.

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Abstract Roche lobe overflow from a donor star onto a black hole or neutron star binary companion can evolve to a phase of unstable runaway mass transfer, lasting as short as hundreds of orbits (≲102 yr for a giant donor) and eventually culminating in a common-envelope event. The highly super-Eddington accretion rates achieved during this brief phase ( M ̇ ≳ 10 5 M ̇ Edd ) are accompanied by intense mass loss in disk winds, analogous to but even more extreme than ultraluminous X-ray (ULX) sources in the nearby universe. Also in analogy with the observed ULX, this expanding outflow will inflate

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3

Martin-Solis, Jose Ramon, Jose Angel Mier, Michael Lehnen, and Alberto Loarte. "Formation and termination of runaway beams during vertical displacement events in tokamak disruptions." Nuclear Fusion, April 2, 2022. http://dx.doi.org/10.1088/1741-4326/ac637b.

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Abstract A simple 0-D model which mimics the plasma surrounded by the conducting structures [D.I. Kiramov, B.N. Breizman, Physics of Plasmas 24, 100702 (2017)] and including self-consistently the vertical plasma motion and the generation of runaway electrons during the disruption is used for an assessment of the effect of vertical displacement events on the runaway current formation and termination. The total plasma current and runaway current at the time the plasma hits the wall is estimated and the effect of injecting impurities into the plasma is evaluated. In the case of ITER, with a highl

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4

Sheikh, Umar Ahmed, Joan Decker, Mathias Hoppe, et al. "Benign termination of runaway electron beams on ASDEX Upgrade and TCV." Plasma Physics and Controlled Fusion, January 12, 2024. http://dx.doi.org/10.1088/1361-6587/ad1e31.

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Abstract This paper discusses the development of a benign termination scenario for runaway electron (RE) beams on ASDEX Upgrade and TCV. A systematic study revealed that a low electron density (ne) companion plasma was required to achieve a large MHD instability, which expelled the conﬁned REs over a large wetted area and allowed for the conversion of magnetic energy to radiation. Control of the companion plasma ne was achieved via neutral pressure regulation and was agnostic to material injection method. The neutral pressure required for recombination was found to be dependent on impurity spe

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5

Bergström, Hannes, Shijie Liu, Vinodh Kumar Bandaru, and Matthias Hoelzl. "Introduction of a 3D global non-linear full-f particle-in-cell model for runaway electrons in JOREK." Plasma Physics and Controlled Fusion, January 27, 2025. https://doi.org/10.1088/1361-6587/adaee7.

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Abstract Disruptions present one of the leading concerns for reliable tokamak operation. The acceleration of electrons from the thermal bulk to relativistic energies, so-called runaway electron (RE) generation, is in particular a problem for future high current machines such as ITER. Accurately predicting the generation and impact of REs is therefore essential for making informed decisions concerning machine design and the use of disruption mitigation systems. This requires high-fidelity modeling also accounting for the large MHD activity observed throughout disruptions, which is made especial

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Dissertations / Theses on the topic "Runaway companion plasma"

1

Sridhar, Sundaresan. "Study of tokamak plasma disruptions and runaway electrons in a metallic environment." Electronic Thesis or Diss., Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0313.

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Les dispositifs de fusion de type tokamaks ont atteint des performances proches de celles nécessaires à réacteur industriel de fusion et les disruptions sont des événements majeurs dans lesquels l'énergie du plasma est perdue en un très court instant. Electrons découplés (RE), de par leur énergie (quelques 10ème\,MeV), peuvent endommager des composants internes du tokamak. La stratégie actuelle consiste à éviter la génération de RE à l’aide d’une injection massive de matière (MMI). Si leur génération ne peut pas être évitée, une 2ème MMI sera utilisée pour atténuer le faisceau d’électrons déco

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