Photodissociation of the HeH+ molecular ion
Abstract
The photodissociation cross section of the molecular ion HeH+ was calculated within the Born-Oppenheimer approximation for a parallel, a perpendicular, and an isotropic orientation of the molecular axis with respect to the field, considering also different initial vibrational and rotational states. The results were compared to recent data from a free-electron laser experiment performed at the FLASH facility [H.B. Pedersen et al., Phys. Rev. Lett. 98, 223202, (2007)]. Within the experimental uncertainties theoretical and experimental results are compatible with each other.
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