[gippgig]

A recent paper (Physical Review Letters 100 132503) reports the characterization of ²⁷¹Hs produced by the ²⁴⁸Cm(²⁶Mg,3n) reaction (some of this data was previously available on the internet). ²⁷¹Hs alpha (9.13 MeV; some other energies were also seen) decays to ²⁶⁷Sg, another new isotope. The half-life wasn't measured but is probably several seconds. ²⁶⁷Sg has a half-life of around 80 s and surprisingly (considering its proximity to the deformed shell closures at Z=108 N=172 & odd neutron) decays mainly by SF. Only 1 of 6 atoms decayed by alpha (8.2 MeV; previously published as a tentative identification) emission. The biggest surprise is that the cross section for the ²⁶Mg,3n reaction was about the same as the 4n reaction. This suggests that similar reactions can be used to make less neutron deficient (=longer lived) isotopes of other transactinides.

[Dan1195]

The relatively low SF ²⁶⁷Sg partial half-life is suprising. The scant information on SF for adjacent nuclides near N=162, ²⁶⁷Db (end product of ²⁸⁷115 chain) and ²⁶⁷Rf (end product of ²⁹¹116) show longer SF half-lives, ~1 h.
We can rule out EC to ²⁶⁷Db as the source, of couse an isomer is always possible.