Observation of interference between two distinct autoionizing states in dissociative photoionization of H 2
Entity
UAM. Departamento de QuímicaPublisher
American Physical SocietyDate
2012-01-11Citation
10.1103/PhysRevLett.108.023004
Physical Review Letters 108.2 (2012): 023004
ISSN
0031-9007 (print); 1079-7114 (online)DOI
10.1103/PhysRevLett.108.023004Funded by
We acknowledge NSERC, CLS, and UoW for their support. We thank Mare Nostrum BSC and CCC-UAM for allocation of computer time. Work partially supported by the MICINN Projects No. FIS2010-15127, No. ACI2008-0777, and No. CSD 2007-00010, the European MC-ITN CORINF, and the COST Action CM0702Project
Gobierno de España. FIS2010-15127; Gobierno de España. ACI2008-0777; Gobierno de España. CSD2007-00010; info:eu-repo/grantAgreement/EC/FP7/264951Editor's Version
http://dx.doi.org/10.1103/PhysRevLett.108.023004Subjects
QuímicaRights
© 2012 American Physical SocietyAbstract
Dissociative photoionization (DPI) of randomly oriented H2 molecules has been studied using linearly polarized synchrotron radiation at selected photon energies of 31, 33, and 35 eV. Large amplitude oscillations in the photoelectron asymmetry parameter β, as a function of electron energy, have been observed. The phase of these β oscillations are in excellent agreement with the results of recent close coupling calculations [Fernández and Martín, New J. Phys. 11, 043020 (2009)]. We show that the oscillations are the signature of interferences between the 1Q1 Σu+1 and 1Q2 Πu1 doubly excited states decaying at different internuclear distances. The oscillations thus provide information about the classical paths followed by the nuclei. The presence of such oscillations is predicted to be a general phenomenon in DPI
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Google Scholar:Reddish, T. J.
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Padmanabhan, A.
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MacDonald, M. A.
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Zuin, L.
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Fernández, J.
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Palacios Cañas, Alicia
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Martín García, Fernando
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