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Abstract

The injection of pellets of hydrogen isotopes into the centre of the discharge is an acknowledged and effective method of feeding the reactor with fuel to sustain the fusion reactions taking place in the plasma. A self-contained model was developed, which can be used to describe the ablation of the pellet throughout its penetration of the plasma, and the expansion of plasmoid along magnetic field lines on the magnetic surfaces traversed. The ablation is described with the aid of the model known as Neutral Gas and Plasma Shielding (NGPS). The expansion of the plasmoid is described using a four-fluid model combining MHD equations and a magnetic field diffusion equation. Reconstruction of signals obtained by interferometry is effected in the precise discharge geometry, provided by an equilibrium code. To reproduce these experimental data, it will be necessary to take into account rotational transform and poloidal rotation in the electron diamagnetic direction.

Additional information

Authors: PICCHIOTTINO J M, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);PÉGOURIÉ B, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);PEGOURIE B, CEA, Departement de Recherches sur la Fusion Controlee, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: Troisième Congrès de la Société Française de Physique - Plasma, Nancy (FR), September 16-18, 1992
Availability: Available from (1) as Paper FR 37071 ORA
Record Number: 199211484 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: fr
Available languages: fr
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