Interaction of O- and H-2 at low temperatures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10294014" target="_blank" >RIV/00216208:11320/15:10294014 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4905078" target="_blank" >http://dx.doi.org/10.1063/1.4905078</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4905078" target="_blank" >10.1063/1.4905078</a>

Result language
angličtina
Original language name
Interaction of O- and H-2 at low temperatures
Original language description
Reactive collisions between O- and H-2 have been studied experimentally at temperatures ranging from 10 K to 300 K using a cryogenic radiofrequency 22-pole ion trap. The rate coefficients for associative detachment, leading to H2O + e(-), increase with decreasing temperature and reach a flat maximum of 1.8 x 10(-9) cm(3) s(-1) at temperatures between 20 K and 80 K. There, the overall reaction probability is in good agreement with a capture model indicating efficient non-adiabatic couplings between the entrance potential energy surfaces. Classical trajectory calculations on newly calculated potential energy surfaces as well as the topology of the conical intersection seam leading to the neutral surface corroborate this. The formation of OH- + H via hydrogen transfer, although occurring with a probability of a few percent only (about 5 x 10(-11) cm(3) s(-1) at temperatures 10-300 K), indicates that there are reaction paths, where electron detachment is avoided. (C) 2015 AIP Publishing LL
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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