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A laser-induced fluorescence experiment in the vacuum UV has been set up to measure the atomic density and velocity distribution of deuterium in the plasma boundary of a tokamak. A dye laser has been used, the frequency of which has been tripled in a phase matched gas mixture (krypton-argon). Signal to noise ratios better than 30 have been obtained at L(alpha). This allows the determination of the energy distributions in the few eV range. The resulting profiles correspond to atomic energies which indicate that molecular dissociation processes are involved in the first place.

Additional information

Authors: MERTENS P, Institut für Plasmaphysik, KFA Jülich GmbH (DE);BOGEN P, Institut für Plasmaphysik, KFA Jülich GmbH (DE)
Bibliographic Reference: Paper presented: 16th European Conference on Controlled Fusion and Plasma Physics, Venezia (IT), March 13-17, 1989
Availability: Available from (1) as Paper EN 34778 ORA
Record Number: 198910627 / Last updated on: 1994-12-01
Original language: en
Available languages: en