High kinetic energy dense plasma jet

• Autorzy: Voronin A. , Gusev V. , Petrov Y. , Sakharov N. , Abramova K. , Hellblom K.
• Konferencja: Proceedings of the 2nd IAEA Research Co-ordination Meeting of the Co-ordinated Research Project on Dense Magnetized Plasma 1-3 June 2005, Kudowa Zdrój, Poland
• Języki publikacji: EN

Abstrakty

EN

Researches on the plasma jet source and injection of hydrogen plasma and neutral gas jets into the Globus-M spherical tokamak are presented. A novel source of dense plasma with high directed velocity is designed, constructed and investigated. This is a double stage system consisting of an intense source utilizing titanium-hydride grains for neutral gas production and a conventional pulsed coaxial accelerator. Optimization of the accelerator parameters, so as to achieve a maximum possible flow velocity with a limited discharge current and a reasonable length of the coaxial electrodes is performed. The calculations are compared with the experiment. A test bed is used for investigation of the intense plasma jet generated by a plasma gun. Plasma jet parameters, among them pressure distribution across the jet, flow velocity, plasma density etc., were measured. Plasma jets with densities of up to 1022 m 3, total numbers of accelerated particles (1 5) . 1019, and flow velocities of 50 100 km/s were successfully injected into the plasma column of the Globus-M tokamak. Interferometric and Thomson scattering measurements confirmed a deep jet penetration and a fast density rise (<0.5 ms) at all spatial points up to the radius r H 0.3a. The injection did not result in plasma degradation.

Słowa kluczowe

EN

plasma gun; spherical tokamak; fuelling system

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2006
• Tom: Vol. 51, nr 1
• Strony: 85--92
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Voronin A.

autor

Gusev V.

autor

Petrov Y.

autor

Sakharov N.

autor

Abramova K.

autor

Hellblom K.

• A. F. Ioffe Physico-Technical Institute, 26 Politechnicheskaya Str., 194021 St. Petersburg, Russia, Tel.: [phone], Fax: [phone],

Bibliografia

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• 10. Voronin AV, Gusev VK, Petrov YuV et al. (2005) High kinetic energy plasma jet generation and its injection into the Globus-M spherical tokamak. Nucl Fusion 45:1039−1045
• 11.Voronin AV, Hellblom KG (2001) Generation of dense plasma clusters with high velocity. Plasma Phys Controlled Fusion 43:1583−1592