The rotational bands in the neutron-rich nuclei 153−157 Pm are investigated by a particle-number conserving method. The kinematic moments of inertia for the 1-quasiparticle bands in odd-A Pm isotopes 153,155,157 Pm are reproduced quite well by the present calculation. By comparison between the experimental and calculated moments of inertia for the three 2-quasiparticle bands in the oddodd nuclei 154,156 Pm, their configurations and bandhead spins have been assigned properly. For the 2-quasiparticle band in 154 Pm, the configuration is assigned as π5/2 − [532] ⊗ ν3/2 − [521] (K π = 4 + ) with the bandhead spin I0 = 4 . In 156 Pm, the same configuration and bandhead spin assignments have been made for the 2-quasiparticle band with lower excitation energy. The configuration π5/2 + [413] ⊗ ν5/2 + [642] (K π = 5 + ) with the bandhead spin I0 = 5 is assigned for that with higher excitation energy.

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