FIZIKA B 12 (2003)  2, 145 - 152

LETTER TO THE EDITOR

ORBITING-CLUSTER MODEL WITH COMBINATORIAL LEVEL DENSITY

ZORAN BASRAK^a, ROBERT PEZER^b and SUZANA SZILNER^a,

^aRu�er Bo�kovi� Institute, Bijeni�ka 54, HR-10002 Zagreb, Croatia
^bPhysics Department, Faculty of Science, University of Zagreb, Bijeni�ka 32,
HR-10000 Zagreb, Croatia

Paper devoted to honour the memory of Professor Nikola Cindro

Received 17 June 2003; revised manuscript received 21 July 2003
Accepted 28 July 2003        Online 3 March 2004

The combinatorial nuclear level densities are used in the orbiting-cluster model calculations. Previous predictions of the model of resonance observability obtained for systems of mass A � 56 with nuclear statistical-model (Bethe formula) level densities are confirmed. The present calculation correctly predicts resonances in barium isotopes, in accordance with recent experimental results, while the statistical model does not.

PACS numbers: 25.70.Ef, 21.10.Ma, 25.70.-z
UDC 539.142.3, 539.144

Keywords: heavy ions, nuclear molecules, resonances, combinatorial level density

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