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Description
| - Thermal rate coefficients for forming H-2 via associative detachment in H- + H collisions were determined using the combination of a 22-pole ion trap (22PT) with a skimmed effusive beam of atomic hydrogen penetrating the ion cloud. The temperature of both reactants have been varied independently (ion trap: T-22PT = 10-150 K, neutral beam accommodator T-ACC = 10, 50, 120 K). Using various combinations, the temperature range between 10 and 135 K has been accessed for the first time experimentally. The effective number density of H (typically some 10(8) cm(-3)) is determined in situ via chemical probing with CO2+ ions. With decreasing temperature, the measured thermal rate coefficients decrease slowly from 5.5 x 10(-9) cm(3) s(-1) at 135 K to 4.1 x 10(-9) cm(3) s(-1) at 10 K. The relative error is 10%, while the absolute values may deviate systematically by up to 40%, due to uncertainties in the calibration reaction. Significant improvements of the versatile and sensitive experiment are possible, e. g., by using electron transfer from H to D+ as calibration standard.
- Thermal rate coefficients for forming H-2 via associative detachment in H- + H collisions were determined using the combination of a 22-pole ion trap (22PT) with a skimmed effusive beam of atomic hydrogen penetrating the ion cloud. The temperature of both reactants have been varied independently (ion trap: T-22PT = 10-150 K, neutral beam accommodator T-ACC = 10, 50, 120 K). Using various combinations, the temperature range between 10 and 135 K has been accessed for the first time experimentally. The effective number density of H (typically some 10(8) cm(-3)) is determined in situ via chemical probing with CO2+ ions. With decreasing temperature, the measured thermal rate coefficients decrease slowly from 5.5 x 10(-9) cm(3) s(-1) at 135 K to 4.1 x 10(-9) cm(3) s(-1) at 10 K. The relative error is 10%, while the absolute values may deviate systematically by up to 40%, due to uncertainties in the calibration reaction. Significant improvements of the versatile and sensitive experiment are possible, e. g., by using electron transfer from H to D+ as calibration standard. (en)
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Title
| - ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K
- ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K (en)
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skos:prefLabel
| - ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K
- ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K (en)
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skos:notation
| - RIV/00216208:11320/12:10130596!RIV13-GA0-11320___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GA202/07/0495), P(GA202/09/0642), P(GA205/09/1183), P(GAP209/12/0233), P(OC10046), S, Z(MSM0021620834)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00216208:11320/12:10130596
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - molecular processes; methods: laboratory; early Universe; atomic processes; astrochemistry (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Glosík, Juraj
- Gerlich, Dieter
- Jusko, Pavol
- Plašil, Radek
- Roučka, Štěpán
- Zymak, Illia
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http://linked.open...ain/vavai/riv/wos
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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http://bibframe.org/vocab/doi
| - 10.1088/0004-637X/749/1/22
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http://localhost/t...ganizacniJednotka
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