ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10130596" target="_blank" >RIV/00216208:11320/12:10130596 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/0004-637X/749/1/22" target="_blank" >http://dx.doi.org/10.1088/0004-637X/749/1/22</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0004-637X/749/1/22" target="_blank" >10.1088/0004-637X/749/1/22</a>

Result language

angličtina

Original language name

ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K

Original language description

Thermal rate coefficients for forming H-2 via associative detachment in H- + H collisions were determined using the combination of a 22-pole ion trap (22PT) with a skimmed effusive beam of atomic hydrogen penetrating the ion cloud. The temperature of both reactants have been varied independently (ion trap: T-22PT = 10-150 K, neutral beam accommodator T-ACC = 10, 50, 120 K). Using various combinations, the temperature range between 10 and 135 K has been accessed for the first time experimentally. The effective number density of H (typically some 10(8) cm(-3)) is determined in situ via chemical probing with CO2+ ions. With decreasing temperature, the measured thermal rate coefficients decrease slowly from 5.5 x 10(-9) cm(3) s(-1) at 135 K to 4.1 x 10(-9)cm(3) s(-1) at 10 K. The relative error is 10%, while the absolute values may deviate systematically by up to 40%, due to uncertainties in the calibration reaction. Significant improvements of the versatile and sensitive experiment are p

Czech name

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Czech description

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Type

J_x - 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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2012

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

749

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

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UT code for WoS article

000302175500022

EID of the result in the Scopus database

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