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Mohammad Reza Pahlavani

Mohammad Reza Pahlavani

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
HIndex: 0/00
Faculty: Science
Address:
Phone: 01125342480

Research

Title
Effects of level density parameter on the superheavy production in cold fusion
Type
JournalPaper
Keywords
Semiclassical method; superheavy nuclei; Woods–Saxon potential; level density.
Year
2014
Journal Modern Physic Letter A
DOI
Researchers Mohammad Reza Pahlavani ، S. Alireza َAlavi

Abstract

By using semiclassical method and considering Woods–Saxon and Coulomb potentials, the level density parameter a was calculated for three superheavy nuclei 270110, 278112 and 290116. Obtained results showed that the value of level density parameter of these nuclei is near to the simple relation a ≈ A/10. In framework of the dinuclear system model, the effects of level density parameter on the probability of the formation of a compound nucleus, the ratio of neutron emission width and fission width, and evaporation residue cross-section of three cold fusion reactions 62Ni+208Pb, 70Zn+208Pb and 82Se+208Pb, leading to superheavy elements were investigated. The findings indicate that the level density parameter play a significant role in calculations of heavy-ion fusion–fission reactions. The obtained results in the case of a = A/12 have larger values in comparison with calculated level density parameter with Woods–Saxon potential (aWS) and a = A/10. The theoretical results of the evaporation residue cross-section are very sensitive to the choice of level density parameter. The calculated values with aWS are in good agreement with experimental values.