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Dramatic transition between electric and magnetic rotations in 106Ag

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Abstract

The lifetimes for the states of magnetic dipole band in 106Ag have been measured using the Doppler-shift attenuation method via the reaction of 100Mo(11B, 5n)106Ag at a beam energy of 60 MeV. The reduced transition strengths of the magnetic dipole band, the B(M1)/B(E2) ratios together with the signature of the level energy as a function of angular momentum for the positive parity states of 106Ag show that a drastic change of excitation mode, that is, from electric rotation to magnetic rotation, occurs within one unit of spin at around I π = 12+. Theoretical calculations based on the triaxial projected shell model consistently reproduce the experimental data and provide an explanation on the nature of observed phenomena such that the dynamical drift of the rotational axis suddenly from the principal axis to the tilted one, along the positive parity bands of 106Ag.

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Author notes

  1. Ying Liu

    Present address: School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

  2. XueQin Li

    Present address: Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing, 100082, China

Authors and Affiliations

  1. China Institute of Atomic Energy, Beijing, 102413, China

    Yun Zheng, YongShou Chen, XiaoGuang Wu, ChuangYe He, Xin Hao, Ying Liu, ZhiMin Wang, XueQin Li, GuangSheng Li & ZaoChun Gao

  2. School of Physics and Nuclear Energy Engineering, Beihang University, Beijing, 100191, China

    LiHua Zhu

  3. Faculty of Science, Shenzhen University, Shenzhen, 518060, China

    LiHua Zhu, Xin Hao & HuiBin Sun

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  1. Yun Zheng
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Correspondence to LiHua Zhu or YongShou Chen.

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Zheng, Y., Zhu, L., Chen, Y. et al. Dramatic transition between electric and magnetic rotations in 106Ag. Sci. China Phys. Mech. Astron. 57, 1669–1675 (2014). https://doi.org/10.1007/s11433-014-5533-y

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  • DOI: https://doi.org/10.1007/s11433-014-5533-y

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