About: LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H     Goto   Sponge   NotDistinct   Permalink

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Description
  • Using a low-temperature 22-pole ion trap apparatus, detailed measurements for the title reaction have been performed between 10 K and 100 K in order to get some state specific information about this fundamental hydrogen abstraction process. The relative population of the two lowest H-2 rotational states, j = 0 and 1, has been varied systematically. NH+ formation is nearly thermo-neutral; however, to date, the energetics are not known with the accuracy required for low-temperature astrochemistry. Additional complications arise from the fact that, so far, there is no reliable theoretical or experimental information on how the reactivity of the N+ ion depends on its fine-structure (FS) state P-3(ja). Since in the present trapping experiment, thermalization of the initially hot FS population competes with hydrogen abstraction, the evaluation of the decay of N+ ions over long storage times and at various He and H-2 gas densities provides information on these processes. First assuming strict adiabatic behavior, a set of state specific rate coefficients is derived from the measured thermal rate coefficients. In addition, by recording the disappearance of the N+ ions over several orders of magnitude, information on nonadiabatic transitions is extracted including FS-changing collisions.
  • Using a low-temperature 22-pole ion trap apparatus, detailed measurements for the title reaction have been performed between 10 K and 100 K in order to get some state specific information about this fundamental hydrogen abstraction process. The relative population of the two lowest H-2 rotational states, j = 0 and 1, has been varied systematically. NH+ formation is nearly thermo-neutral; however, to date, the energetics are not known with the accuracy required for low-temperature astrochemistry. Additional complications arise from the fact that, so far, there is no reliable theoretical or experimental information on how the reactivity of the N+ ion depends on its fine-structure (FS) state P-3(ja). Since in the present trapping experiment, thermalization of the initially hot FS population competes with hydrogen abstraction, the evaluation of the decay of N+ ions over long storage times and at various He and H-2 gas densities provides information on these processes. First assuming strict adiabatic behavior, a set of state specific rate coefficients is derived from the measured thermal rate coefficients. In addition, by recording the disappearance of the N+ ions over several orders of magnitude, information on nonadiabatic transitions is extracted including FS-changing collisions. (en)
Title
  • LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H
  • LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H (en)
skos:prefLabel
  • LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H
  • LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H (en)
skos:notation
  • RIV/00216208:11320/13:10191440!RIV14-GA0-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GA205/09/1183), P(GAP209/12/0233), P(OC10046), S
http://linked.open...iv/cisloPeriodika
  • 1
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http://linked.open...aciTvurceVysledku
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  • 85511
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  • RIV/00216208:11320/13:10191440
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  • molecular processes; ISM: abundances; astrochemistry (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [1E3B239DA4C2]
http://linked.open...i/riv/nazevZdroje
  • Astrophysical Journal
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http://linked.open...v/svazekPeriodika
  • 768
http://linked.open...iv/tvurceVysledku
  • Glosík, Juraj
  • Gerlich, Dieter
  • Mulin, Dmytro
  • Plašil, Radek
  • Zymak, Illia
  • Hejduk, Michal
http://linked.open...ain/vavai/riv/wos
  • 000317960500086
issn
  • 0004-637X
number of pages
http://bibframe.org/vocab/doi
  • 10.1088/0004-637X/768/1/86
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  • 11320
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