Document Detail

Stabilization of H+-H2 collision complexes between 11 and 28 K.
MedLine Citation:
PMID:  23028154     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Formation of H(3)(+) via association of H(+) with H(2) has been studied at low temperatures using a 22-pole radiofrequency trap. Operating at hydrogen number densities from 10(11) to 10(14) cm(-3), the contributions of radiative, k(r), and ternary, k(3), association have been extracted from the measured apparent binary rate coefficients, k*=k(r)+k(3)[H(2)]. Surprisingly, k(3) is constant between 11 and 22 K, (2.6±0.8)×10(-29) cm(6) s(-1), while radiative association decreases from k(r)(11 K)=(1.6±0.3)×10(-16) cm(3) s(-1) to k(r)(28 K)=(5±2)×10(-17) cm(3) s(-1). These results are in conflict with simple association models in which formation and stabilization of the complex are treated separately. Tentative explanations are based on the fact that, at low temperatures, only few partial waves contribute to the formation of the collision complex and that ternary association with H(2) may be quite inefficient because of the 'shared proton' structure of H(5)(+).
Radek Plasil; Illia Zymak; Pavol Jusko; Dmytro Mulin; Dieter Gerlich; Juraj Glosík
Related Documents :
21898364 - Effects of ring contraction on the conformational preferences of α-substituted proline...
10735444 - Conformational preferences in 2-nitrophenylthiolates: interplay between intra- and inte...
11262434 - Patterns of soft c-h...o hydrogen bonding in diaryl sulfones.
23379944 - Total ammoniacal nitrogen biofiltration of wastewaters from aquaculture systems using m...
19841784 - A facile iodide-controlled fluorescent switch based on the interconversion between two-...
16608354 - Mechanism of al(iii)-catalyzed transamidation of unactivated secondary carboxamides.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Philosophical transactions. Series A, Mathematical, physical, and engineering sciences     Volume:  370     ISSN:  1364-503X     ISO Abbreviation:  Philos Trans A Math Phys Eng Sci     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-10-02     Completed Date:  2012-11-13     Revised Date:  2013-04-24    
Medline Journal Info:
Nlm Unique ID:  101133385     Medline TA:  Philos Trans A Math Phys Eng Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  5066-73     Citation Subset:  -    
Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  The ortho : para ratio of H3+ in laboratory and astrophysical plasmas.
Next Document:  The Jahn-Teller effect in the 3pe' Rydberg state of H3: review of experimental and ab initio determi...