科研之友
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摘要
The possible existence of wobbling modes in the N = 59 isotones 95Kr, 97Sr, 99Zr, 101Mo, 103Ru, 105Pd, and 107Cd is explored by the constrained triaxial covariant density functional theory combined with quantum particle rotor model calculations. It is found that there are several states with suitable triaxial deformations and high -j particle configuration to establish wobbling modes in 97Sr, 99Zr, 101Mo, 103Ru, and 105Pd. The available experimental energy spectra based on the nu(1h11/2)1 configuration in 97Sr and 99Zr are described well. The decreased energy difference between the doublet bands, the enhanced B(E2)out/B(E2)in values, as well as the one-phonon oscillation characteristic of the total angular momentum indicate that the two nuclei can be transverse wobbling candidates, which suggests the possibility of a larger region of wobbling modes near the A approximate to 100 mass region.
