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APS » Journals » Phys. Rev. A » Volume 72 » Issue 2
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Phys. Rev. A 72, 021201(R) (2005) [4 pages]

Ioniclike energy structure of neutral core-excited states in free Kr clusters

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S. Peredkov1, A. Kivimäki1,4, S. L. Sorensen1, J. Schulz2,3, N. Mårtensson2,3, G. Öhrwall2, M. Lundwall2, T. Rander2, A. Lindblad2, H. Bergersen2, S. Svensson2, O. Björneholm2, and M. Tchaplyguine3
1Department of Synchrotron Radiation Research, Institute of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden
2Department of Physics, Uppsala University, PO Box 530, SE-751 21 Uppsala, Sweden
3MAX-lab, Lund University, PO Box 118, SE-221 00 Lund, Sweden
4INFM, TASK Laboratory, 34012 Trieste, Italy

Received 21 March 2005; published 11 August 2005

The development of electronic states in krypton clusters is investigated by high-resolution core-level electron spectroscopy. The energy ordering of bulk versus surface 3d−1np(n>5) core-excited states in neutral clusters is demonstrated to be reversed to the 3d−15p level situation. The cluster 3d−16p,7p states are proven to be at a lower energy than the corresponding atomic levels. These findings reveal the ioniclike energy structure of the neutral cluster core-excited levels. The phenomenon is explained by a spatial spread of the excited orbitals over the cluster lattice.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.72.021201
DOI:
10.1103/PhysRevA.72.021201
PACS:
36.40.−c, 73.22.−f, 78.70.Dm, 79.60.−i
 
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