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| 1 | Direct mass measurements of neutron-rich ^(86)Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes显示文摘In this paper, we present direct mass measurements of neutron-rich86 Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry(IMS) method. The new mass excesses of52-54 Sc nuclides are determined to be-40492(82),-38928(114),-34654(540) ke V, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012(AME12).In particular,53 Sc and54Sc are more bound by 0.8 Me V and 1.0 Me V, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number N =32 in Sc isotopes. | 徐星 王猛 张玉虎 徐瑚珊 帅鹏 涂小林 Yuri A.Litvinov 周小红 孙保华 原有进 夏佳文 杨建成 Klaus Blaum 陈瑞九 陈相成 付超义 葛壮 胡正国 黄文嘉 刘大委 蓝乙华 马新文 毛瑞士 T.Uesaka 肖国青 邢元明 T.Yamaguchi Y.Yamaguchi 曾奇 颜鑫亮 赵红卫 赵铁成 章卫 詹文龙 | 2015 | Chinese Physics C2015，39，10： | 1 |
| 2 | 丰中子核^(63,65,67)Mn的在束γ谱学研究显示文摘利用放射性束68Fe轰击液氢靶引起的敲出反应,研究了极端丰中子核^(63,65,67)Mn的激发态,指认了它们的自旋宇称,建立了这三个原子核的能级纲图。纲图包含11/2^(-)、9/2^(-)和7/2^(-)三个激发态以及5/2^(-)_(g.s.)基态,它们由三条ΔI=1的γ跃迁连接。这种能级结构与K=5/2时强耦合转动带的特征一致。使用改进的LNPS有效相互作用(LNPSm)的大规模壳模型计算能很好地重现观测到的能级。计算表明,^(65,67)Mn的低位激发态都主要包含处于4p-4h的中子组态和1p-1h的质子组态。基于实验结果发现,在吸积中子星壳中,与质量数A=63相关的Urea中微子冷却效果比预期的要强很多,而A=65,67的冷却效果比预期的更弱。 | 卢洪洋 刘小雨 丁兵 刘忠 P.Doornenbal A.Obertelli S.MLenzi P.M.Walker L.X.Chung B.D.Linh G.Authelet H.Baba D.Calvet F.Chateau A.Corsi A.Delbart J.M.Gheller A.Gillibert T.Isobe V.Lapoux M.Matsushita S.Momiyama T.Motobayashi M.Niikura F.Nowacki H.Otsu C.Peron A.Peyaud E.C.Pollacco J.Y.Rousse H.Sakurai M.Sasano Y.Shiga S.Takeuchi R.Taniuchi T.Uesaka H.Wang K.Yoneda | 2020 | 原子核物理评论2020，37，3： | 0 |
| 3 | 2-4 First Isochronous Mass Measurement in Neutron-rich Region at CSRe显示文摘Mass is one of the fundamental properties of atomic nuclei. Isochronous mass spectrometry (IMS), using astorage ring combined with an in-flight separator, has been shown to be a powerful tool for mass measurementof exotic nuclei[1]. Recently, masses of many proton-rich nuclides were accurately determined at the HIRFL-CSRfacility[2]. In this paper, we described the first isochronous mass measurement of neutron-rich nuclides at CSRe.This experiment was performed at the end of 2011. In the experiment, the primary beam of 86Kr28+ ions wasaccumulated and accelerated to an energy of 460.65 MeV/u in the synchrotron CSRm. The 86Kr28+ ions were fastextracted and focused on a 15 mm thick beryllium target which was placed at the entrance of the RIBLL2 (anin-flight fragment separator). | Xu Xing Wang Meng Zhang Yuhu Xu Hushan Tu Xiaolin Yu.A.Litvinov Zhou Xiaohong Sun Baohua Yuan Youjin Xia Jiawen Yang Jiancheng K.Blaum Chen Ruijiu Chen Xiangchen Fu Chaoyi Ge Zhuang Hu Zhengguo Huang Wenjia Liu Dawei Y.H.Lam Ma Xinwen Mao Ruishi T.Uesaka Xiao Guoqing Xing Yuanming T.Yamaguchi Y.Yamaguchi Zeng Qi Yan Xinliang Zhao Hongwei Zhao Tiecheng Zhang Wei Zhan Wenlong | 2014 | IMP & HIRFL Annual Report2014，，1： | 0 |
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