Stavově vybrané ión-molekulové reakce 15N+ + CD4 a O+ + 13CO2 důležité v chemii ionosféry planet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F04%3A00107670" target="_blank" >RIV/61388955:_____/04:00107670 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

15N+ +CD4 and O+ +-13CO2 State-Selected Ion-Molecule Reactions Relevant to the Chemistry of Planetary Ionospheres

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/IAA4040405" target="_blank" >IAA4040405: Srážky pomalých polyatomových iontů s povrchy: Přenos energie a chemické reakce</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry

ISSN

1089-5639

e-ISSN

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Svazek periodika

108

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

9998-10009

Kód UT WoS článku

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EID výsledku v databázi Scopus

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