ENHANCED T-ODD, P-ODD ELECTROMAGNETIC MOMENTS IN REFLECTION ASYMMETRIC NUCLEI

Collective P- and T-odd moments produced by parity and time invariance violating forces in reflection asymmetric nuclei are considered. The enhanced collective Schiff, electric dipole, and octupole moments appe ar due to the mixing of rotational levels of opposite parity. These mo ments can exceed single-particle moments by more than 2 orders of magn itude. The enhancement is due to the collective nature of the intrinsi c moments and the small energy separation between members of parity do ublets. In turn these nuclear moments induce enhanced T- and P-odd eff ects in atoms and molecules. A simple estimate is given and a detailed theoretical treatment of the collective T-, P-odd electric moments in reflection asymmetric, odd-mass nuclei is presented. In the present w ork we improve an the simple liquid drop model by evaluating the Strut insky shell correction and include corrections due to pairing. Calcula tions are performed for octupole deformed long-lived odd-mass isotopes of Rn, Fr, Ra, Ac, and Pa and the corresponding atoms. Experiments wi th such atoms may improve substantially the limits on time reversal vi olation.