On the decay properties of 269Hs and indications for the new nuclide 270Hs

In bombardments Of Cm-248 with 143.7-146.8 MeV Mg-26 ions the nuclides (269)Hs and presumably (270)Hs were produced. After chemical isolation, Its atoms were identified by observing genetically linked nuclear-decay chains. Three chains originating from (269)Hs confirmed the decay properties observed previously in the decay of (277) 112. Two chains exhibited the characteristics expected for the new nuclide (270)Hs, which was predicted to be a deformed doubly magic nucleus. From the measured E-alpha = 9.16(-0.03)(+0.07) MeV an alpha-decay half-life of 3.6(-1.4)(+0.8) s was estimated.