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Article Navigation >  Nuclear Physics Review  > 2016  >  33(4): 375-384

ZHENG Yun, WU Xiaoguangn, LI Guangsheng, LI Congbo, CHEN Qiming, ZHU Lihua, HE Chuangye, HAO Xin, WANG Lielin, YAO Shunhe, LIU Ying, LI Lihua, WANG Jinlong, ZHONG Jian, ZHOU Wenkui, DEN Litao, ZHU Baoji. Nuclear Structure Studies Based on the Lifetime Measurements of Excited States in Nuclei at the in-beam γ Terminal of HI-13 Tandem Accelerator[J]. Nuclear Physics Review, 2016, 33(4): 375-384. doi: 10.11804/NuclPhysRev.33.04.375
Citation: ZHENG Yun, WU Xiaoguangn, LI Guangsheng, LI Congbo, CHEN Qiming, ZHU Lihua, HE Chuangye, HAO Xin, WANG Lielin, YAO Shunhe, LIU Ying, LI Lihua, WANG Jinlong, ZHONG Jian, ZHOU Wenkui, DEN Litao, ZHU Baoji. Nuclear Structure Studies Based on the Lifetime Measurements of Excited States in Nuclei at the in-beam γ Terminal of HI-13 Tandem Accelerator[J]. Nuclear Physics Review, 2016, 33(4): 375-384. doi: 10.11804/NuclPhysRev.33.04.375
shu

Nuclear Structure Studies Based on the Lifetime Measurements of Excited States in Nuclei at the in-beam γ Terminal of HI-13 Tandem Accelerator

doi: 10.11804/NuclPhysRev.33.04.375
  • 1.

    China Institute of Atomic Energy, Beijing 102413, China;

  • 2.

    Beihang University, Beijing 100191, China;

  • 3.

    Shenzhen University, Shenzhen 518060, China

Funds:  National Natural Science Foundation of China(11305269, 11375267, 11475072, 11405274, 11205068, 11175259)
  • Received Date: 2016-06-07
  • Rev Recd Date: 2016-07-25
  • Publish Date: 2016-12-20
  • The significance and principle of lifetime measurements of excited states in nuclei are briefly described. By using the recoil-distance Doppler-shift method, the Doppler-shift attenuation method, and the fast-timing technique established at the in-beam γ terminal of HI-13 tandem accelerator, nuclear structure studies on topical subjects including chiral symmetries and magnetic rotation have been performed. Our experimental results indicate that 130Cs shows better chiral characteristics, however, the two candidate bands of 106Ag could not be a pair of chiral doublet bands. For magnetic rotation, the deduced B(M1) values deduced from the measured level lifetimes clearly demonstrate that the yrast positive-parity band in 106Ag and both the yrast positiveand negative-parity bands in 107Ag are magnetic rotation bands. In addition, our lifetime measurement data also provide valuable experimental evidences for the interpretation and understanding of the shape evolution, the shape coexistence, and the critical-point symmetries of shape phase transition in the different isotope chains.
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Nuclear Structure Studies Based on the Lifetime Measurements of Excited States in Nuclei at the in-beam γ Terminal of HI-13 Tandem Accelerator

doi: 10.11804/NuclPhysRev.33.04.375
  • 1. China Institute of Atomic Energy, Beijing 102413, China;
  • 2. Beihang University, Beijing 100191, China;
  • 3. Shenzhen University, Shenzhen 518060, China
Funds:  National Natural Science Foundation of China(11305269, 11375267, 11475072, 11405274, 11205068, 11175259)
  • Received Date: 2016-06-07
  • Rev Recd Date: 2016-07-25
  • Publish Date: 2016-12-20

Abstract: The significance and principle of lifetime measurements of excited states in nuclei are briefly described. By using the recoil-distance Doppler-shift method, the Doppler-shift attenuation method, and the fast-timing technique established at the in-beam γ terminal of HI-13 tandem accelerator, nuclear structure studies on topical subjects including chiral symmetries and magnetic rotation have been performed. Our experimental results indicate that 130Cs shows better chiral characteristics, however, the two candidate bands of 106Ag could not be a pair of chiral doublet bands. For magnetic rotation, the deduced B(M1) values deduced from the measured level lifetimes clearly demonstrate that the yrast positive-parity band in 106Ag and both the yrast positiveand negative-parity bands in 107Ag are magnetic rotation bands. In addition, our lifetime measurement data also provide valuable experimental evidences for the interpretation and understanding of the shape evolution, the shape coexistence, and the critical-point symmetries of shape phase transition in the different isotope chains.

ZHENG Yun, WU Xiaoguangn, LI Guangsheng, LI Congbo, CHEN Qiming, ZHU Lihua, HE Chuangye, HAO Xin, WANG Lielin, YAO Shunhe, LIU Ying, LI Lihua, WANG Jinlong, ZHONG Jian, ZHOU Wenkui, DEN Litao, ZHU Baoji. Nuclear Structure Studies Based on the Lifetime Measurements of Excited States in Nuclei at the in-beam γ Terminal of HI-13 Tandem Accelerator[J]. Nuclear Physics Review, 2016, 33(4): 375-384. doi: 10.11804/NuclPhysRev.33.04.375
Citation: ZHENG Yun, WU Xiaoguangn, LI Guangsheng, LI Congbo, CHEN Qiming, ZHU Lihua, HE Chuangye, HAO Xin, WANG Lielin, YAO Shunhe, LIU Ying, LI Lihua, WANG Jinlong, ZHONG Jian, ZHOU Wenkui, DEN Litao, ZHU Baoji. Nuclear Structure Studies Based on the Lifetime Measurements of Excited States in Nuclei at the in-beam γ Terminal of HI-13 Tandem Accelerator[J]. Nuclear Physics Review, 2016, 33(4): 375-384. doi: 10.11804/NuclPhysRev.33.04.375
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