Formation of H2O+ and H3O+ Cations in Reactions of OH+ and H2O+ with H-2: Experimental Studies of the Reaction Rate Coefficients from T=15 to 300 K

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10379002" target="_blank" >RIV/00216208:11320/18:10379002 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3847/1538-4357/aaa0d8" target="_blank" >https://doi.org/10.3847/1538-4357/aaa0d8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/aaa0d8" target="_blank" >10.3847/1538-4357/aaa0d8</a>

Result language

angličtina

Original language name

Formation of H2O+ and H3O+ Cations in Reactions of OH+ and H2O+ with H-2: Experimental Studies of the Reaction Rate Coefficients from T=15 to 300 K

Original language description

OH&lt;SUP&gt;+&lt;/SUP&gt; and H&lt;INF&gt;2&lt;/INF&gt;O&lt;SUP&gt;+&lt;/SUP&gt; cations play a significant role in the chemistry of the cold interstellar medium and hence their hydrogen abstraction reactions with H&lt;INF&gt;2&lt;/INF&gt; have to be included in ion chemical models. The reactions lead directly or indirectly to H&lt;INF&gt;3&lt;/INF&gt;O&lt;SUP&gt;+&lt;/SUP&gt; ions that subsequently recombine with electrons and dissociate into H atoms and H&lt;INF&gt;2&lt;/INF&gt;O. The experiments described in this paper provide rate coefficients (k&lt;INF&gt;OH&lt;/INF&gt;+ and k&lt;INF&gt;H&lt;INF&gt;2&lt;/INF&gt;O&lt;/INF&gt;+) for the reactions of OH&lt;SUP&gt;+&lt;/SUP&gt; and H&lt;INF&gt;2&lt;/INF&gt;O&lt;SUP&gt;+&lt;/SUP&gt; with H&lt;INF&gt;2&lt;/INF&gt; over a wide temperature range (from 15 to 300 K). A cryogenic 22-pole RF ion trap instrument was employed for this purpose. It was found that k&lt;INF&gt;OH&lt;/INF&gt;+ increases from (0.76 +/- 0.30) x 10&lt;SUP&gt;-9&lt;/SUP&gt; cm&lt;SUP&gt;3&lt;/SUP&gt; s&lt;SUP&gt;-1&lt;/SUP&gt; at 17 K to (1.24 +/- 0.25) x 10&lt;SUP&gt;-9&lt;/SUP&gt; cm&lt;SUP&gt;3&lt;/SUP&gt; s&lt;SUP&gt;-1&lt;/SUP&gt; at 263 K while k&lt;INF&gt;H&lt;INF&gt;2&lt;/INF&gt;O&lt;/INF&gt;+ is nearly constant, varying from (0.93 +/- 0.35) x 10&lt;SUP&gt;-9&lt;/SUP&gt; cm&lt;SUP&gt;3&lt;/SUP&gt; s&lt;SUP&gt;-1&lt;/SUP&gt; at 17 K to (1.00 +/- 0.25) x 10&lt;SUP&gt;-9&lt;/SUP&gt; cm&lt;SUP&gt;3&lt;/SUP&gt; s&lt;SUP&gt;-1&lt;/SUP&gt; at 218 K.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Name of the periodical

Astrophysical Journal

ISSN

0004-637X

e-ISSN

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Volume of the periodical

854

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

5

Pages from-to

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UT code for WoS article

000424502900013

EID of the result in the Scopus database

2-s2.0-85042451014