Role of nuclear motion in double ionization of molecular hydrogen by a single photon |
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Authors: | Horner D A Vanroose W Rescigno T N Martín F McCurdy C W |
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Institution: | Lawrence Berkeley National Laboratory, Chemical Sciences, Berkeley, California 94720, USA. |
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Abstract: | We examine the origin of recently observed variations with internuclear distance (R) of the fully differential cross sections for double ionization of aligned H2 by absorption of a single photon. Using the results of fully converged numerical solutions of the Schr?dinger equation, we show that these variations arise primarily from pronounced differences in the R dependence of the parallel and perpendicular components of the ionization amplitude. We also predict that R dependences should be readily observable in the asymmetry parameter for photodouble ionization, even in experimental measurements that are not differential in the energy sharings between ejected photoelectrons. |
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