Document Detail

Single photon-induced symmetry breaking of H2 dissociation.
MedLine Citation:
PMID:  17272717     Owner:  NLM     Status:  PubMed-not-MEDLINE    
H2, the smallest and most abundant molecule in the universe, has a perfectly symmetric ground state. What does it take to break this symmetry? We found that the inversion symmetry can be broken by absorption of a linearly polarized photon, which itself has inversion symmetry. In particular, the emission of a photoelectron with subsequent dissociation of the remaining H+2 fragment shows no symmetry with respect to the ionic H+ and neutral H atomic fragments. This lack of symmetry results from the entanglement between symmetric and antisymmetric H+2 states that is caused by autoionization. The mechanisms behind this symmetry breaking are general for all molecules.
F Martín; J Fernández; T Havermeier; L Foucar; Th Weber; K Kreidi; M Schöffler; L Schmidt; T Jahnke; O Jagutzki; A Czasch; E P Benis; T Osipov; A L Landers; A Belkacem; M H Prior; H Schmidt-Böcking; C L Cocke; R Dörner
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  315     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-02-02     Completed Date:  2007-02-14     Revised Date:  2007-03-19    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  629-33     Citation Subset:  -    
Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
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MeSH Terms
Comment In:
Science. 2007 Feb 2;315(5812):610-1   [PMID:  17272711 ]

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