J Royal and A E Orel 2005 J. Phys.: Conf. Ser. 4 177 doi:10.1088/1742-6596/4/1/024
J Royal and A E Orel
Show affiliationsResonant dissociative recombination of the He2+ molecular ion is an important process in the ionosphere as well as in laboratory plasmas. Recently, rate coefficients have been measured for the dissociative recombination of He+2 using the ion storage ring TSR in Heidelberg, Germany. Previously, calculations have been reported for the cross section in the low energy region. We will report results in the 0 to 15 eV energy region, where the cross section is dominated by a series of resonances converging to the first excited state of the molecular ion. We will also discuss the resonances converging to the next series of excited states. The resonance parameters for this system are obtained from electron scattering calculations using the Complex Kohn variational method. These resonance parameters are used as input to a time-dependent wave packet calculation of the dissociation dynamics. The calculated cross sections and rates will be reported and compared to available experiment.
34.80.Lx Recombination, attachment, and positronium formation
52.72.+v Laboratory studies of space- and astrophysical-plasma processes
33.80.Eh Autoionization, photoionization, and photodetachment
31.15.A- Ab initio calculations
34.50.-s Scattering of atoms and molecules
34.80.Ht Dissociation and dissociative attachment
31.50.Df Potential energy surfaces for excited electronic states
Issue 1 (2005)
J Royal and A E Orel 2005 J. Phys.: Conf. Ser. 4 177
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