A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F16%3A00464677" target="_blank" >RIV/61388955:_____/16:00464677 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11084-016-9499-9" target="_blank" >http://dx.doi.org/10.1007/s11084-016-9499-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11084-016-9499-9" target="_blank" >10.1007/s11084-016-9499-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan

Popis výsledku v původním jazyce

Reliable theoretical models of the chemical kinetics of the ionosphere of Saturn’s moon, Titan, is highly dependent on the precision of the rates of the reactions of ambient ions with hydrocarbon molecules at relevant temperatures. A Variable Temperature Selected Ions Flow Tube technique, which has been developed primarily to study these reactions at temperatures within the range of 200–330 K, is briefly described. The flow tube temperature regulation system and the thermalisation of ions are also discussed. Preliminary studies of two reactions have been carried out to check the reliability and efficacy of kinetics measurements: (i) Rate constants of the reaction of CH3+ ions with molecular oxygen were measured at different temperatures, which indicate values in agreement with previous ion cyclotron resonance measurements ostensibly made at 300 K. (ii) Formation of CH3+ ions in the reaction of N2+ ions with CH4 molecules were studied at temperatures within the range 240–310 K which showed a small but statistically significant decrease of the ratio of product CH3+ ions to reactant N2+ ions with reaction temperature.

Název v anglickém jazyce

A Pilot Study of Ion - Molecule Reactions at Temperatures Relevant to the Atmosphere of Titan

Popis výsledku anglicky

Reliable theoretical models of the chemical kinetics of the ionosphere of Saturn’s moon, Titan, is highly dependent on the precision of the rates of the reactions of ambient ions with hydrocarbon molecules at relevant temperatures. A Variable Temperature Selected Ions Flow Tube technique, which has been developed primarily to study these reactions at temperatures within the range of 200–330 K, is briefly described. The flow tube temperature regulation system and the thermalisation of ions are also discussed. Preliminary studies of two reactions have been carried out to check the reliability and efficacy of kinetics measurements: (i) Rate constants of the reaction of CH3+ ions with molecular oxygen were measured at different temperatures, which indicate values in agreement with previous ion cyclotron resonance measurements ostensibly made at 300 K. (ii) Formation of CH3+ ions in the reaction of N2+ ions with CH4 molecules were studied at temperatures within the range 240–310 K which showed a small but statistically significant decrease of the ratio of product CH3+ ions to reactant N2+ ions with reaction temperature.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA14-19693S" target="_blank" >GA14-19693S: Chemické procesy v atmosféře Titanu - experimentální studie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Origins of Life and Evolution of the Biosphere

ISSN

0169-6149

e-ISSN

—

Svazek periodika

46

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

533-538

Kód UT WoS článku

000385182800018

EID výsledku v databázi Scopus

2-s2.0-84964307768