Single photon double ionization of the helium dimer

Details Single photon double ionization of the helium dimer Single photon double ionization of the helium dimer

2010-06-14

arxiv.org/abs/1006.2667v1

Phys. Rev. Lett. 104, 153401 (2010)

Physics

Atomic and Molecular Clusters

10 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.104.153401

We show that a single photon can ionize the two helium atoms of the helium dimer in a distance up to 10 {\deg}A. The energy sharing among the electrons, the angular distributions of the ions and electrons as well as comparison with electron impact data for helium atoms suggest a knock-off type double ionization process. The Coulomb explosion imaging of He_2 provides a direct view of the nuclear wave function of this by far most extended and most diffuse of all naturally existing molecules.

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