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Fizika B : a journal of experimental and theoretical physics, Vol. 3 No. 2, 1994.

Original scientific paper

Unexpected property of proximity potentials

Radu A. Gherghescu ; Institute of Atomic Physics, P. O. Box MG-6, RO-76900 Bucharest, Romania
Walter Greiner ; Institute of Atomic Physics, P. O. Box MG-6, RO-76900 Bucharest, Romania
Dorin N. Poenaru ; Institut für Theoretische Physik der Universität, Robert-Mayer Strasse 8-10, Postfach 111932, D-60054 Frankfurt am Main 11, Deutschland

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Abstract

The cold fission barriers of heavy and superheavy nuclei (Z=80-120) are computed using two macroscopic models, the Yukawa-plus-exponential and the proximity potential. No shell and pairing corrections have been added. Unexpectedly, the barriers are showing two maxima in a wide region of nuclei (Z=96-120, mostly neutron-deficient ones) and various mass and charge asymmetries, lower for lighter nuclei and larger for heavier ones. The rather shallow minimum separating the maxima can reach a depth of 37 keV in the Yukawa-plus-exponential model and 190 keV in the proximity potential model.

Keywords

Hrčak ID:

303450

URI

https://hrcak.srce.hr/303450

Publication date:

1.6.1994.

Article data in other languages: croatian

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