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Phys. Rev. A 67, 012706 (2003) [9 pages]

Angle-dependent postcollisional interaction and interference effects in resonant double photoionization of neon

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B. Rouvellou and S. Rioual
UFR Sciences et Techniques, Université de Brest, 6 avenue V. Le Gorgeu, 29285 Brest Cedex, France

L. Avaldi and R. Camilloni
CNR-IMIP, Area della Ricerca di Roma, CP10, 00016 Monterotondo Scalo, Italy

G. Stefani
Unita’ INFM and Dipartimento di Fisica, Universita’ di Roma Tre, via della Vasca Navale 84, 00146 Rome, Italy

G. Turri
INFM TASC, Padriciano 99, 34102 Trieste, Italy
Dipartimento di Fisica, Politecnico di Milano, Milan, Italy

Received 17 August 2002; published 23 January 2003

The resonant double photoionization of Ne has been studied via an electron-electron coincidence experiment. A complete set of measurements was performed at different mutual angles when the photoelectron and Auger-electron pairs have nearly equal energy. The overall experimental energy resolution, narrower than the natural linewidth of the intermediate state, has allowed us to observe interference effects due to the indistinguishability of the two electrons. The observed energy and angular distribution exhibit a strong interplay of postcollisional interaction and interference effects. Calculations based on the model developed by Sheinerman and Schmidt [J. Phys. B 30, 1677 (1997)] describe the main trend of the experimental observations.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.012706
DOI:
10.1103/PhysRevA.67.012706
PACS:
32.80.Fb, 32.80.Hd, 39.30.+w