Collisional excitation and emission of H-alpha Stark multiplet in fusion plasmas

TitleCollisional excitation and emission of H-alpha Stark multiplet in fusion plasmas
Publication TypeJournal Article
Year of Publication2010
AuthorsO. Marchuk, Y. Ralchenko, R.K Janev, W. Biel, E. Delabie, A.M Urnov
JournalJournal of Physics B-Atomic Molecular and Optical Physics
Volume43
Number1
Pagination6
Date PublishedJan
Type of ArticleArticle
ISBN Number0953-4075
Accession NumberISI:000272790900002
KeywordsATOMS, EXCITED-STATES, hydrogen, IMPACT, IONS, SPECTRUM
Abstract

We study the excitation of parabolic Stark states in hydrogen atoms by collisions with fast ions. It is shown that excitation cross sections are very sensitive to the angle between the electric field and the projectile velocity. The calculated collisional data are implemented in a newly developed collisional-radiative model involving parabolic quantum states of hydrogen. Our simulations are shown to explain the frequently observed non-statistical behaviour of the H-alpha component intensities under typical conditions of a motional Stark effect (MSE). A good agreement with the MSE data from the Joint European Torus (JET) for emission of the sigma and pi components (Mandl et al 1993 Plasma Phys. Control Fusion 35 1373) is obtained for the first time.

URL<Go to ISI>://000272790900002
Division

Fusion Physics

PID

4e54ef26c45827aedf2735e4b5fc8f4c

Alternate TitleJ. Phys. B-At. Mol. Opt. Phys.

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