Izvorni znanstveni članak
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
Sažetak
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.
Ključne riječi
Hrčak ID:
303450
URI
Datum izdavanja:
1.6.1994.
Posjeta: 132 *