Triaxiality explored by an odd quasi-particle

The triaxiality of odd-mass nuclei is investigated by coupling a quasiparticle to an even-even core through the core-quasiparticle coupling model. Both soft and rigid triaxial cores are considered. The soft core is described by the collective model with rotation-vibrational motion, while the rigid core is described by the triaxial rotor model, which is a limiting case of the collective model with only rotational motion. We show that the presence of the odd quasiparticle modifies the collective quadrupole dynamics of the core to appear more rigid.

Automated summary

This study investigates the triaxiality of odd-mass nuclei by coupling a quasiparticle to an even-even core through the core-quasiparticle coupling model. Both soft and rigid triaxial cores are considered. It is shown that the presence of the odd quasiparticle modifies the collective quadrupole dynamics of the core to appear more rigid.