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Toroidal transport studies in TEXTOR using lithium laser blow-off injection

Published online by Cambridge University Press:  01 July 1997

G. KOCSIS
Affiliation:
Permanent address: KFKI Research Institute for Particle and Nuclear Physics, POB 49, H-1525 Budapest, Hungary. Institut für Plasmaphysik, Forschungszentrum Jülich, Association Euratom–KFA, D-52425 Jülich, Germany
J. S. BAKOS
Affiliation:
Permanent address: KFKI Research Institute for Particle and Nuclear Physics, POB 49, H-1525 Budapest, Hungary. Institut für Plasmaphysik, Forschungszentrum Jülich, Association Euratom–KFA, D-52425 Jülich, Germany
S. KÁLVIN
Affiliation:
Permanent address: KFKI Research Institute for Particle and Nuclear Physics, POB 49, H-1525 Budapest, Hungary. Institut für Plasmaphysik, Forschungszentrum Jülich, Association Euratom–KFA, D-52425 Jülich, Germany
L. KÖNEN
Affiliation:
Institut für Plasmaphysik, Forschungszentrum Jülich, Association Euratom–KFA, D-52425 Jülich, Germany
G. MANK
Affiliation:
Institut für Plasmaphysik, Forschungszentrum Jülich, Association Euratom–KFA, D-52425 Jülich, Germany
A. POSPIESZCZYK
Affiliation:
Institut für Plasmaphysik, Forschungszentrum Jülich, Association Euratom–KFA, D-52425 Jülich, Germany

Abstract

The toroidal spread of laser blow-off injected lithium is studied. The temporal variation of the toroidal and radial distributions of the first two ionization stages of cross-field-injected lithium is measured around the injection location by a gated, image-intensified CCD camera. Broad atomic distribution and deep radial penetration of the injected beam is observed. The toroidal delay of the arrival of the Li+ ions is investigated by detecting the intensity of their line radiation at different toroidal positions away from the injection port. Possible explanations for the observations and the possible mechanism for the toroidal spread are discussed in detail. A comparison of the detected distribution of Li ions with a 1D simulation is presented.

Type
Research Article
Copyright
1997 Cambridge University Press

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