Optical visualisation of electric and magnetic field perturbations in tokamak discharges by hydrogen pellet injection
Two-dimensional intensity distribution mappings of photographs of pellet ablation cloud trajectories in the TFR and TS tokamaks reveal irregular shapes of the luminous striations. The observed features are not well understood, but can be described and interpreted as the first direct visual observation of pre-existing electric and/or magnetic field perturbations in the hot core of tokamak plasmas. It is suggested that pellet injection is used as a diagnostic tool for the study of plasma structures and transport phenomena. Observations made during the study are described, and the possible cause of these anomalies discussed.
Bibliographic Reference: Report: EUR-CEA-FC-1451 EN (1992)
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199210857 / Last updated on: 1994-12-02
Original language: en
Available languages: en