Experimental Results for H-2 Formation from H- and H and Implications for First Star Formation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F10%3A10079249" target="_blank" >RIV/00216208:11320/10:10079249 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Experimental Results for H-2 Formation from H- and H and Implications for First Star Formation
Original language description
During the epoch of first star formation, molecular hydrogen (H-2) generated via associative detachment (AD) of H- and H is believed to have been the main coolant of primordial gas for temperatures below 10(4) kelvin. The uncertainty in the cross sectionfor this reaction has limited our understanding of protogalaxy formation during this epoch and of the characteristic masses and cooling times for the first stars. We report precise energy-resolved measurements of the AD reaction, made with the use of aspecially constructed merged-beams apparatus. Our results agreed well with the most recent theoretically calculated cross section, which we then used in cosmological simulations to demonstrate how the reduced AD uncertainty improves constraints of the predicted masses for Population III stars.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA202%2F07%2F0833" target="_blank" >GA202/07/0833: Towards nonlocal resonance dynamics of polyatomic systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science
ISSN
0036-8075
e-ISSN
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Volume of the periodical
329
Issue of the periodical within the volume
5987
Country of publishing house
US - UNITED STATES
Number of pages
3
Pages from-to
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UT code for WoS article
000279402700033
EID of the result in the Scopus database
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