The new isotope 179Pb and α-decay properties of 179Tlm

The new isotope 179Pb has been produced in the complete fusion reaction 40Ca + 144Sm ? 179Pb+5n at the velocity filter SHIP (GSI). Its ?-decay energy of 7350(20) keV and half-life value of 3.5+1.4? 0.8 ms were deduced based on the recoil???? correlation technique. A spin parity of I? = (9/2?) was tentatively assigned to the ground state of 179Pb; thus, it is based on the 1h9/2 orbital. Improved measurements of the ?-decay properties of 179Tlm and 175Aum are also presented.