Investigation of the addition of nitrogen-containing gases to a hot filament diamond chemical vapour deposition reactor

May, Paul; Burridge, PR; Rego, C.A.; Tsang, RS; Ashfold, Michael N. R.; Rosser, KN; Tanner, RE; Cherns, D.; Vincent, R.

doi:10.1016/0925-9635(95)00379-7

Cited by 36 publications

(9 citation statements)

References 19 publications

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“…Thus, while molecular nitrogen is a highly inert species, if not ''activated'' by the plasma, ammonia and its related radicals have a strong affinity with methyl radicals, believed to be the main long-range carbon-transporting species, leading to the fast reactions of the type [17] …”

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confidence: 99%

Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

et al. 2010

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A technique based on reactive gas injection in the afterglow region of the divertor plasma is proposed for the suppression of tritium-carbon codeposits in remote areas of ITER when operated with carbon-based divertor targets. Experiments in a divertor simulator plasma device indicate that a 4 nm/min deposition can be suppressed by addition of 1 Pa·m³ s⁻¹ ammonia flow at 10 cm from the plasma. These results bolster the concept of nonperturbative scavenger injection for tritium inventory control in carbon-based fusion plasma devices, thus paving the way for ITER operation in the active phase under a carbon-dominated, plasma facing component background.

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confidence: 99%

Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

et al. 2010

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“…[12] Later, the reaction was also investigated in a hot-filament chemical-vapor deposition reactor. [13] As to the possible mechanism, successive hydrogen-atom abstractions to produce HCN have been suggested, with formimine, CH 2 NH, being a central intermediate. However, the proposed mechanisms are by and large rather speculative since no intermediates were observed.…”

Section: Introductionmentioning

confidence: 99%

Unimolecular Fragmentation of CH₃NH₂: Towards a Mechanistic Description of HCN Formation

Roithová¹,

Schröder²,

Schwarz³

2005

Eur J Org Chem

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Keywords: Density functional calculations / Dehydrogenation / Mass spectrometry / MethylamineThe mechanism of the consecutive fragmentation of methylamine, CH 3 NH 2 , is studied by means of neutralization-reionization mass spectrometry (NRMS), labeling experiments, and calculations employing density functional theory. It is shown that under the conditions of NRMS the fragmentations proceed by a radical mechanism that involves four distinct X-H bond cleavages (X = C, N). In the first step, a hydrogen atom is eliminated from the methyl group; next, homolytic cleavage of an N-H bond occurs. The so-formed CH 2 NH intermediate then, in competition, releases a hydrogen atom

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“…The catalytic decomposition of HCN on heated metal surfaces has already been studied using mass-spectrometric techniques, since HCN is one of the candidates to fabricate carbon nitride films [23,24]. When heated Ta was used as a catalyzer, NH 3 , CH 4 and C 2 H 2 were identified as final products.…”

Section: Introductionmentioning

confidence: 99%

Catalytic decomposition of HCN on heated W surfaces to produce CN radicals

Umemoto¹,

Morimoto²,

Yamawaki³

et al. 2004

Journal of Non-Crystalline Solids

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Investigation of the addition of nitrogen-containing gases to a hot filament diamond chemical vapour deposition reactor

Cited by 36 publications

References 19 publications

Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

Unimolecular Fragmentation of CH₃NH₂: Towards a Mechanistic Description of HCN Formation

Catalytic decomposition of HCN on heated W surfaces to produce CN radicals

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Investigation of the addition of nitrogen-containing gases to a hot filament diamond chemical vapour deposition reactor

Cited by 36 publications

References 19 publications

Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

Suppression of Tritium Retention in Remote Areas of ITER by Nonperturbative Reactive Gas Injection

Unimolecular Fragmentation of CH3NH2: Towards a Mechanistic Description of HCN Formation

Catalytic decomposition of HCN on heated W surfaces to produce CN radicals

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Unimolecular Fragmentation of CH₃NH₂: Towards a Mechanistic Description of HCN Formation