Google alerts brought this to my attention. M. R. Pahlavani and S. A. Alavi, *Mod. Phys. Lett. A* DOI: 10.1142/S0217732314502149
Effects of level density parameter on the superheavy production in cold fusion M. R. Pahlavani Department of Nuclear Physics, University of Mazandaran, Babolsar 47415-416, Iran S. A. Alavi <http://www.worldscientific.com/doi/abs/10.1142/S0217732314502149?src=recsys&journalCode=mpla#S0217732314502149FN001> Corresponding author Department of Nuclear Physics, University of Mazandaran, Babolsar 47415-416, Iran Received: 10 July 2014 Revised: 29 October 2014 Accepted: 29 October 2014 Published: 18 December 2014 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. *Keywords: *Semiclassical method; superheavy nuclei; Woods–Saxon potential; level density *PACS: *24.10.Pa, 25.70.Jj, 24.10.-i, 24.60.-k
