Articolo in rivista, 2013, ENG, 10.1103/PhysRevLett.110.083001

Signature of two-electron interference in angular resolved double photoionization of Mg

Sokell, E., Bolognesi, P., Kheifets, A., Bray, I., Safgren, S., Avaldi, L.

1 School of Physics, UCD Science Centre, Belfield, Dublin 4, Ireland 2 CNR-Istituto di Metodologie Inorganiche e dei Plasmi, Area della Ricerca di Roma 1, 00015 Monterotondo Scalo, Italy 3 RSPE, The Australian National University, Canberra ACT 0200, Australia 4 ARC Centre for Antimatter-Matter Studies, Curtin University, Perth, Western Australia 6845, Australia

The double photoionization of Mg has been studied experimentally and theoretically in a kinematic where the two photoelectrons equally share the excess energy. The observation of a symmetrized gerade amplitude, which strongly deviates from the Gaussian ansatz, is explained by a two-electron interference predicted theoretically, but never before observed experimentally. Similar to the Cooper minima in the single photoionization cross section, the effect finds its origin in the radial extent and oscillation of the target wave function.

Physical review letters (Print) 110 , pp. 083001–?

Keywords

ALKALINE-EARTH ATOMS, PHOTODOUBLE IONIZATION, HELIUM, CALCIUM, GAMMA- 2E

CNR authors

Avaldi Lorenzo, Bolognesi Paola

CNR institutes

NANOTEC – Istituto di Nanotecnologia, ISM – Istituto di struttura della materia