 in the 0000 paper "A new radioactive series - the protactinium series" [@0000Stu00]. Thorium metal targets were bombarded with 00 MeV deuterons and a 00 MeV $^0$He beam from the Berkeley 00-inch cyclotron forming $^{000}$Pa in (d,0n) and ($\alpha$,p0n) reactions. $^{000}$R