N P Curran et al 2000 Plasma Sources Sci. Technol. 9 169 doi:10.1088/0963-0252/9/2/309
The effect of the addition of noble gases on H- production in a dc filament discharge in hydrogen
N P Curran
, M B Hopkins
, D Vender and B W James§
The effect of the addition of helium, neon, argon and xenon on the production of negative hydrogen ions in a magnetically confined dc filament discharge has been investigated. The addition of helium and neon produces effects not significantly different from an equivalent increase in the hydrogen pressure. The addition of argon and low fractions of xenon produces significant increases in the negative-ion density for hydrogen pressures close to 1 mTorr. The addition of argon and xenon, by increasing the electron density and decreasing the electron temperature, achieves conditions closer to optimum for negative-ion production. The largest enhancement occurs with argon and it is suggested that a resonant energy exchange between excited argon atoms and hydrogen molecules is a contributing factor.
- PACS
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34.80.Ht Dissociation and dissociative attachment
34.80.Lx Recombination, attachment, and positronium formation
82.30.Lp Decomposition reactions (pyrolysis, dissociation, and fragmentation)
82.33.Xj Plasma reactions (including flowing afterglow and electric discharges)
- Subjects
- Dates
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Issue 2 (May 2000)
Received 23 September 1999, in final form 13 December 1999
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The effect of the addition of noble gases on H- production in a dc filament discharge in hydrogen
N P Curran et al 2000 Plasma Sources Sci. Technol. 9 169
-
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-
Characterization of stochastic spatially and spectrally partially coherent electromagnetic pulsed beams
Chaoliang Ding et al 2009 New J. Phys. 11 083001
-
Microscopic description of black rings in AdS/CFT
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-
Robustness of cooperation in the evolutionary prisoner's dilemma on complex networks
J Poncela et al 2007 New J. Phys. 9 184
-
The GNewton to 0 limit of Euclidean quantum gravity
L Smolin 1992 Class. Quantum Grav. 9 883
-
Low scale gravity as the source of neutrino masses?
Veniamin Berezinsky et al JHEP04(2005)009
-
N=4 SU(2) conformal invariance in harmonic superspace: the super-Schwarzian derivative
E H Saidi and M Zakkari 1990 Class. Quantum Grav. 7 L123
-
Dissociative electron attachment to HCCCN
K Graupner et al 2006 New J. Phys. 8 117
-
Ab initio study of resonant dissociative recombination of He2+
J Royal and A E Orel 2005 J. Phys.: Conf. Ser. 4 177
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