Triatomic Hydrogen
Welcome to the Triatomic Hydrogen Group at the Department of Molecular and Optical Physics - University of Freiburg, Germany

Momentum vector correlations in three-particle fragmentation of triatomic hydrogen
H. Höffler, P.C. Fechner, M. Gisi, F. Baumgartner, U. Galster and H. Helm
Department of Molecular and Optical Physics, Albert-Ludwigs-Universität, Hermann-Herder-Strasse 3, D-79104  Freiburg, Germany

Phys. Rev. A 83, 042519 (2011) [8 pages]


The correlation pattern in the center-of-mass motion of the three fragments from dissociation of well-defined Rydberg states of H3, and D3, is studied. Dissociation of the molecules is induced by an external electric field. Through a comparison with results obtained in radiative cascading we can show that the correlation pattern is that of the short lived 2s 2A'1 electronic state, of which a tiny amplitude is admixed by the external electric field. A comparison of our results with the predictions by M. Lehner and M. Jungen [J. Phys. B 42, 065101 (2009)] and U. Galster [Phys. Rev. A 81, 032517 (2010)] for predissociation of the 2s 2A'1 state is made. We show that the experimental vector correlation maps are direct images of the spatial symmetry of the product of vibrational wavefunction and spatial dependence of the non-adiabatic coupling operator.

DOI: 10.1103/PhysRevA.83.042519
PACS: 31.50.Gh, 33.80.Gj

© 2011 The American Physical Society