Collective properties of129Cs

High-spin properties of129Cs have been investigated following116Cd(18O, p4nγ) and122Sn(11B, 4nγ) reactions. Rotational bands built on h11/2,g7/2, and d5/2 singleproton states were observed. At higher spins, band-crossings attributed to the alignment of h11/2 neutrons were observed. A comparison with total Routhian cranking calculations support this interpretation.