Background: The interplay between the collective rotation and the quasi-particle alignment is a significant feature of nuclear structure at high spins. The g-factors of intra-band high spin states of the ground rotational band can provide direct and unique information on quasi-particle alignment since the g-factors of the high-j proton and the high-j neutron are positively large and negatively small

respectively. Purpose: The present work was motivated to measure g-factors of the rotational states of the positive parity yrast band in 108Cd and to study the quasi-particle alignment. Methods: High spin states of 108Cd were populated by the fusion-evaporation reaction 76Ge(37Cl

1p4n)108Cd at beam energy of 135 MeV from the HI-13 tandem accelerator at China Institute of Atomic Energy

and the g-factors were determined by the transient-magnetic filed-ion implantation perturbed angular distribution (TMF-IMPAD) method. Results: The measured g-factors of 2+

4+ state are 0.33(11)

0.18(6)

respectively. The h11/2 neutrons align at the 10+ state

which leads to the decrement of the g-factors. And the g7/2 neutrons align gradually from 10+ to 16+

which makes the g-factors increase. Conclusion: The g-factor of the bend head of the anti-magnetic rotation band

16+ state

was measured and the value is ?0.09(3). Abstract