Neutral helium line emission for edge plasma conditions

A diagnostic method for the determination of the neutral helium diffusion coefficient in the edge of magnetically confined fusion plasmas is developed on the basis of emission spectroscopy and population kinetics. The new collisional-radiative numerical code SOPHIA showed that intercombination trans...

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Bibliographic Details
Published in:Journal of nuclear materials 2005-03, Vol.337-339, p.1101-1105
Main Authors: Rosmej, F.B., Stamm, R., Fritzsche, S., Capes, H., Koubiti, M., Marandet, Y., Lisitsa, V.S., Ohno, N., Takamura, S., Nishijima, D.
Format: Article
Language:English
Subjects:
Diffusion
Divertor plasma
Edge modelling
Helium
JET
NAGDIS-II
Neutrals
Radiation
Spectroscopy
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Summary:A diagnostic method for the determination of the neutral helium diffusion coefficient in the edge of magnetically confined fusion plasmas is developed on the basis of emission spectroscopy and population kinetics. The new collisional-radiative numerical code SOPHIA showed that intercombination transitions are extremely important to describe the qualitative and quantitative behaviour of the line emission and the population flow in diffusive plasmas. Corresponding simulations relevant for edge plasma conditions and the NAGDIS-II plasma simulator are discussed.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2004.10.141