Effect of odd-multipolarity deformations on fission barriers in superheavy nuclei

The shapes of superheavy nuclei have been investigated using Total-Routhian-Surface calculations in a multidimensional space including both even- and odd-multipolarity deformations. Particularly, we have discussed in detail possible shape coexistence in Fm and No isotopes where normally-deformed rotational bands have been observed experimentally. It is found that the heights of fission barriers can be significantly reduced due to the inclusion of odd-multipolarity deformations. In some neutron-deficient superheavy nuclei, there are shallow superdeformed minima with fission barriers less than 3 MeV.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000316303200060&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, Particles & FieldsEICPCI-S(ISTP)