About: 15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres     Goto   Sponge   NotDistinct   Permalink

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Description
  • Na studium reaktivity stavově vybraných atomárních ionů N+ a O+ byla použita disociativní fotoionizace N2 a O2 pomocí synchrotronního záření v koincidenci s fotoelektrony. Přesný výběr jejich základních stavů N+(3P), O+(4S) nebo excitovaných stavů N+(1D), O+(2D), O+(2P) byl dosáhnutý volbou energie fotonů a následnou diskriminací atomárních iontů s kinetickou energií. Obě studované reakce 15N+ + CD4 a O+ + 13CO2 mají důležitou úlohu v chemických procesech v ionosférách Titánu, Marsu a Venuše a jsou silně závislé na excitaci mateřských iontů. Reakce N+ s metanem vedoucí k produktům DCN+ a DCND+, které pocházejí z rozpadu dlouho žijícího komplexu překvapivě není silně závislá na exitaci N+.Oproti tomu disociativní přenos náboje vedoucí k CD3+ je dominantní pro reakci s N+ v základním stavu a nedisociativní přenos náboje vedoucí k CD4+ převažuje v případě, kdy N+ je v excitovaném 1D stavu. Tento neočakávaný výsledek může být vysvětlitelný pomocí spin-orbitových výběrových pravidel ... (cs)
  • The dissociative photoionization of N-2 and O-2 by synchrotron radiation in coincidence with threshold photoelectrons is used to produce state-selected N+ and O+ atomic ions to study their reactivity. A pure selection of their ground state, N+(P-3) and O+(S-4), or excited states, N+(D-1), O+(D-2), and O+(P-2), is obtained by the choice of the photon energy and by further discrimination of atomic ions produced with translational recoil energy. Both reactions studied, N-15(+) + CD4 and O+ + (CO2)-C-13, are of major importance for the chemistry of Titan, Mars, and Venus´ionospheres and are strongly affected by excitation of the parent atomic ion. For the reaction of N+ with methane, DCN+ and DCND+ products coming from the decomposition of a long-lived complex are surprisingly not much sensitive to the N+ excitation, whereas the branching ratio between the dissociative charge-transfer channel, leading to CD3+, which is the main product for the ground-state reaction.
  • The dissociative photoionization of N-2 and O-2 by synchrotron radiation in coincidence with threshold photoelectrons is used to produce state-selected N+ and O+ atomic ions to study their reactivity. A pure selection of their ground state, N+(P-3) and O+(S-4), or excited states, N+(D-1), O+(D-2), and O+(P-2), is obtained by the choice of the photon energy and by further discrimination of atomic ions produced with translational recoil energy. Both reactions studied, N-15(+) + CD4 and O+ + (CO2)-C-13, are of major importance for the chemistry of Titan, Mars, and Venus´ionospheres and are strongly affected by excitation of the parent atomic ion. For the reaction of N+ with methane, DCN+ and DCND+ products coming from the decomposition of a long-lived complex are surprisingly not much sensitive to the N+ excitation, whereas the branching ratio between the dissociative charge-transfer channel, leading to CD3+, which is the main product for the ground-state reaction. (en)
Title
  • 15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres
  • 15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres (en)
  • Stavově vybrané ión-molekulové reakce 15N+ + CD4 a O+ + 13CO2 důležité v chemii ionosféry planet (cs)
skos:prefLabel
  • 15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres
  • 15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres (en)
  • Stavově vybrané ión-molekulové reakce 15N+ + CD4 a O+ + 13CO2 důležité v chemii ionosféry planet (cs)
skos:notation
  • RIV/61388955:_____/04:00107670!RIV/2005/AV0/A54005/N
http://linked.open.../vavai/riv/strany
  • 9998;10009
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA4040405), Z(AV0Z4040901)
http://linked.open...iv/cisloPeriodika
  • 45
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 596530
http://linked.open...ai/riv/idVysledku
  • RIV/61388955:_____/04:00107670
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • charge-transfer reactions; cross-sections; kinetic energy (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [555AD863CEE6]
http://linked.open...i/riv/nazevZdroje
  • Journal of Physical Chemistry
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 108
http://linked.open...iv/tvurceVysledku
  • Žabka, Ján
  • Alcaraz, Ch.
  • Dutuit, O.
  • Thissen, R.
  • Nicolas, Ch.
http://linked.open...n/vavai/riv/zamer
issn
  • 1089-5639
number of pages
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