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Dissociative recombination in cascaded arc generated Ar–N2 and N2 expanding plasma (1994)

Dahiya, R. P. ; de Graaf, M. J. ; Severens, R. J. ; [weitere]

[S.l.] : American Institute of Physics (AIP)

Physics of Plasmas 1 (1994), S. 2086-2095

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Details

ISSN: 1089-7674

Quelle: AIP Digital Archive

Thema: Physik

Notizen: The expanding plasma obtained from a cascaded arc thermal source is analyzed with double probe, mass spectrometric, and Faraday cup measurements. In the argon–nitrogen mixtures a decrease in ion fluence is observed, contrary to pure argon plasmas in which recombination is insignificant. The recombination in argon–nitrogen plasmas is caused by charge exchange between atomic ions and N2 molecules followed by dissociative recombination. Hence, these processes account for the enhanced axial decay of the plasma density and also for the change in the ion mass spectra of the ion beam extracted from the expanding plasma. The total ion beam current density is also governed by charge exchange followed by dissociative recombination and is thus dependent on the recirculating neutral molecules.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.870604

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