Abstract

Atom recombination at wall is a phenomenon involved in many plasma experiments and also in present tokamaksand future fusion plasma reactors like ITER. This exothermic surface reaction is catalyzed by the materialand depends on its composition and temperature. In the MESOX experimental set-up, several methods weredeveloped for the measurement of the recombination parameters. In this paper, a method developed for the experimentalevaluation of the recombination coefficient of atomic hydrogen ?H on tungsten at high temperature ispresented using two series of atomic lines (H? and He or H? and H2) and the results obtained for surface temperatureup to 1350 K are given. A Molecular Dynamics Simulation has been done for the recombination of hydrogenatoms on tungsten in conditions close to the experimental ones using a semi-classical collisionalmethod.Modeling results are compared to the experimental data for two surface temperature values and a fairlygood agreement was obtained.

Autore Pugliese

• Rutigliano Maria

Tutti gli autori

• M. Rutigliano; D. Santoro; M. Balat-Pichelin

Titolo volume/Rivista

Surface science

Anno di pubblicazione

2014

ISSN

0039-6028

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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