Signature splitting of the πh11/2 band and high-spin structures in 155Tb

LI Tao; CHEN Bao-Ren; LIU Shu-Xin

doi:10.1088/1674-1137/34/7/006

Chinese Physics C> 2010, Vol. 34> Issue(7) : 958-963 DOI: 10.1088/1674-1137/34/7/006

Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb

Abstract
HTML
Reference
Related

PDF

Abstract：
Seven experimentally observed bands of ¹⁵⁵Tb are analyzed in detail, using the particle-number-conserving method for treating the cranked shell model with monopole and quadrupole pairing interactions. We satisfactorily reproduce the experimental alignments and especially focus on the microscopic mechanism of the second back-bending and the influence of pair interaction on ultrahigh spins. Our calculated results show that the πi_13/2 orbitals are too high to give a contribution to the moment of inertia below hω≈0.7 MeV. Instead, the crossing between the π[541]1/2 and other proton orbitals is responsible for the second back-bending. We assign a possible configuration to the decoupled band found in ¹⁵⁵Tb and predict eleven bands which are experimentally unobserved.

References

[1]

. Paul E S, Twin P J, Evens A O. Phys. Rev. Lett., 2007,98: 012501-1-42. Hartley D J, Brown T B, Kondev F G et al. Phys. Rev. C,1998, 58: 2720-27353. Winter G, Funke L, Kaun K H et al. Nucl. Phys. A, 1971,176: 609-6254. Tippett J C, Burke D G. Can. J. Phys., 1972, 50: 3152-31715. Riley M A, Hartley D J, Simpson J et al. Phys. Rev. C,1996, 53: 989-9926. Evens A O, Paul E S, Simpson J et al. Phys. Rev. Lett.,2004, 92: 252502-1-47. Evens A O, Paul E S, Simpson J et al. Phys. Rev. C, 2006,73: 064303-1-148. Lee J Y, Aleonard M M, Deleplanque M A et al. Phys. Rev.Lett., 1977, 38: 1454-14579. Wakai M, Faessler A. Nucl. Phys. A, 1978, 295: 86-11010. Dibel M. Nucl. Phys. A, 1984, 419: 221-24011. Ragnarsson I. Nucl. Phys. A, 1993, 557: 167-17712. Karlsson L B, Ragnarsson I, Aerg S. Nucl. Phys. A, 1998,639: 654-68213. Afanasjev A V, Ragnarsson I, Ring P. Phys. Rev. C, 1999,59: 3166-317114. WU C S, ZENG J Y. Phys. Rev. C, 1989, 39: 666-67015. ZENG J Y, JIN T H, ZHAO Z J. Phys. Rev. C, 1994, 50:1388-139716. ZENG J Y, LIU S X, LEI Y A, YU L. Phys. Rev. C, 2001,63: 024305-1-417. XIN X B, LIU S X, LEI Y A, ZENG J Y. Phys. Rev. C,2000, 62: 067303-1-418. LIU S X, ZENG J Y. Phys. Rev. C, 2002, 66: 067301-1-419. Bengtsson R, Frauendorf S, May F R. At. Data Nucl. DataTables, 1986, 35: 15-12220. LIU S X, ZENG J Y, ZHAO E G. Phys. Rev. C, 2002, 66:024320-1-521. Bengtsson R, Frauendorf S. Nucl. Phys. A, 1979, 314: 27-36; Bengtsson R, Frauendorf S. Nucl. Phys. A, 1979, 327:139-17122. Riedinger L L, Andersen O, Frauendorf S et al. Phys. Rev.Lett., 1980, 44: 568-572

[1]	WU Yang , XU Zhou , LI Zheng-Hong , MA Qiao-Sheng , TANG Chuan-Xiang . High efficiency X-band relativistic backward wave oscillator with non-uniform slow wave structures. Chinese Physics C, 2012, 36(8): 750-752. doi: 10.1088/1674-1137/36/8/011
[2]	YANG Yun-Yi , ZHU Sheng-Jiang , DING Huai-Bo , WANG Jian-Guo , XU Qiang , GU Long . High-spin states in neutron-rich ¹⁰²Mo nucleus. Chinese Physics C, 2009, 33(S1): 199-201. doi: 10.1088/1674-1137/33/S1/064
[3]	XU Qiang , ZHU Sheng-Jiang , CHE Xing-Lai , DING Huai-Bo , GU Long , ZHU Li-Hua , WU Xiao-Guang , LIU Ying , HE Chuang-Ye , LI Li-Hua , PAN Bo , HAO Xin , LI Guang-Sheng . High spin band structure in ¹³⁹Nd. Chinese Physics C, 2009, 33(S1): 185-187. doi: 10.1088/1674-1137/33/S1/059
[4]	LIU Ying , WU Xiao-Guang , ZHU Li-Hua , LI Guang-Sheng , HE Chuang-Ye , LI Xue-Qin , PAN Bo , HAO Xin , LI Li-Hua , WANG Zhi-Min , LI Zhong-Yu , XU Qiang . Signature splitting in ¹²⁹Ce. Chinese Physics C, 2009, 33(S1): 212-214. doi: 10.1088/1674-1137/33/S1/068
[5]	HUA Hui , LI Zhong-Yu , WANG Shou-Yu , MENG Jie , LI Zhi-Huan , LI Xiang-Qing , XU Fu-Rong , LIU Hong-Liang , ZHANG Shuang-Quan , ZHOU Shan-Gui , YE Yan-Lin , JIANG Dong-Xing , ZHENG Tao , ZHU Li-Hua , WU Xiao-Guang , LI Guang-Sheng , HE Chuang-Ye , MA Li-Ying , LU Fei , FAN Feng-Ying , HAN Li-Ying , WANG He , XIAO Jun , LI Xue-Qin , CHEN Dong , FANG Xiao , LOU Jian-Lin , LIU Ying , HAO Xin , PAN Bo , LI Li-Hua . Structure change of ¹⁵⁶Yb at high-spin states. Chinese Physics C, 2009, 33(S1): 148-150. doi: 10.1088/1674-1137/33/S1/047
[6]	WANG Shou-Yu , ZHANG Shuang-Quan , QI Bin , MENG Jie . πg_9/2⊙νh_11/2 doublet bands in A~100 mass region. Chinese Physics C, 2009, 33(S1): 37-39. doi: 10.1088/1674-1137/33/S1/012
[7]	ZHENG Yun , ZHU Li-Hua , WU Xiao-Guang , LI Guang-Sheng , HAO Xin , WANG Lie-Lin , HE Chuang-Ye , LIU Ying , LI Xue-Qin , PAN Bo , WANG Lei , LI Zhong-Yu , DING Huai-Bo . High-spin states in ¹²⁸I. Chinese Physics C, 2009, 33(S1): 179-181. doi: 10.1088/1674-1137/33/S1/057
[8]	SUN Liang , LU Jing-Bin , YANG Dong , WANG Lie-Lin , LIU Yun-Zuo , ZHU Li-Hua , WU Xiao-Guang , LI Guang-Sheng . Level scheme in ¹⁶⁰Tm towards complete high-spin structure. Chinese Physics C, 2008, 32(S2): 134-137.
[9]	LIU Hong-Liang , XU Fu-Rong . Shape coexistence of high-spin isomeric states in proton-rich A~190 nuclei. Chinese Physics C, 2008, 32(S2): 131-133.
[10]	HAO Xin , ZHU Li-Hua , WU Xiao-Guang , HE Chuang-Ye , LI Guang-Sheng , LI Xue-Qin , LIU Ying , LI Li-Hua , PAN Bo . High-spin states and signature inversion studies in ¹¹⁰Ag. Chinese Physics C, 2008, 32(S2): 143-145.
[11]	WANG Hua-Lei , ZHANG Yu-Hu , ZHOU Xiao-Hong , GUO Ying-Xiang , LEI Xiang-Guo , LIU Min-Liang , TUO Peng , XIE Cheng-Ying , SONG Li-Tao , YU Hai-Ping , ZHENG Yong , GUO Wen-Tao , , , , . Observation of πh_11/2⊙νi_13/2 Band in Doubly-Odd ¹⁷⁰Re and Its Systematic Analysis. Chinese Physics C, 2004, 28(S1): 47-49.
[12]	ZHENG Yong , ZHOU Xiao-Hong , ZHANG Yu-Hu , LIU Zhong , PAN Qiang-Yan , GAN Zai-Guo , , , , , , , , , . Level Scheme of High-Spin States in ¹⁴⁵Tb. Chinese Physics C, 2002, 26(4): 359-363.
[13]	Zhang Yuhu , Y. Gono , E. Ideguchi , T. Kishida , K. Morida , A. Yoshita , H. Kumagai , M. Ishihara , S. Mitarai , A. Odahara , M. Shibata , T. Morikaawa , M. Oshima , H. Iimura , M. Shibata , S. Hamata , T. Murakami , H. Kusakari , M. Sugawara , M. Ogawa , M. Nagajima . Experimental Observation of High-spin states in ¹⁴⁶Sm Nucleus. Chinese Physics C, 1997, 21(S1): 437-442.
[14]	Zhang Yuhu , Zhao Qingzhong , Zhou Xiaohong , Sun Xiangfu , Lei Xiangguo , Guo Yingxiang , Liu Zhong , Chen Xinfeng , Zhu Yongtai , Wen Shuxian , Yuan Guanjun , Liu Xiangan . High-Spin States in ¹⁶²Lu and Signature Inversion of Yrast Bands in Doubly Odd Nuclei Around the A=160 Mass Region. Chinese Physics C, 1997, 21(S2): 15-24.
[15]	Zhou Xiaohong , Sun Xiangfu , Guo Yinxiang , Lei Xiangguo , Liu Zhong , Zhang Yuhu , Chen Xinfeng , Jin Hanjuan , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Study of High-Spin States in ¹⁹⁸Bi. Chinese Physics C, 1996, 20(S3): 243-251.
[16]	Xing Zheng , Zeng Wenping , Chen Xingqu , Sun Xiangfu , Liu Zhong . Studies of πh_11/2 Bands in Odd-A^117—125Cs Nuclei. Chinese Physics C, 1996, 20(7): 639-643.
[17]	Sang Jianping , Liu Yong . Microscopic Investigation of High-Spin States for Even-Even Nuclei (Part 2): Application to isotones ¹⁵⁴Dy, ¹⁵⁶Er and ¹⁵⁸Yb. Chinese Physics C, 1994, 18(S4): 407-414.
[18]	Sang Jianping , Liu Yong . Microscopic Investigation of High-Spin States for Even-Even Nuclei (I) Approach. Chinese Physics C, 1994, 18(S4): 399-406.
[19]	Sun Xiangfu , Liu Zong , Zhou Xiaohong , Lei Xiangguo , Jin Hanjuan , Pan Qiangyan , Zhang Yuhu , Guo Yingxiang , Cheng Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Observation of a Possible πh_11/2 band of ¹¹⁷Cs. Chinese Physics C, 1994, 18(S1): 1-4.
[20]	Sun Xiangfu , Liu Zhong , Zhou Xiaohong , Lei Xiangguo , Jin Hanjuan , Pan Qiangyan , Zhang Yuhu , Guo Yingxiang , Cheng Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Measurement of the h_11/2 Band of ¹¹⁷Cs. Chinese Physics C, 1994, 18(S4): 341-344.

Access

Get Citation

LI Tao, CHEN Bao-Ren and LIU Shu-Xin. Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb[J]. Chinese Physics C, 2010, 34(7): 958-963. doi: 10.1088/1674-1137/34/7/006

LI Tao, CHEN Bao-Ren and LIU Shu-Xin. Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb[J]. Chinese Physics C, 2010, 34(7): 958-963. doi: 10.1088/1674-1137/34/7/006 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-08-10
Revised: 2009-12-22

Article Metric

Article Views(2486)
PDF Downloads(522)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb

Corresponding author: LIU Shu-Xin,

Received Date: 2009-08-10

Accepted Date: 2009-12-22

Available Online: 2010-07-05

Abstract:

Seven experimentally observed bands of ¹⁵⁵Tb are analyzed in detail, using the particle-number-conserving method for treating the cranked shell model with monopole and quadrupole pairing interactions. We satisfactorily reproduce the experimental alignments and especially focus on the microscopic mechanism of the second back-bending and the influence of pair interaction on ultrahigh spins. Our calculated results show that the πi_13/2 orbitals are too high to give a contribution to the moment of inertia below hω≈0.7 MeV. Instead, the crossing between the π[541]1/2 and other proton orbitals is responsible for the second back-bending. We assign a possible configuration to the decoupled band found in ¹⁵⁵Tb and predict eleven bands which are experimentally unobserved.

HTML

Reference (1)

Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Signature splitting of the πh_11/2 band and high-spin structures in ¹⁵⁵Tb

Corresponding author: LIU Shu-Xin,

HTML

目录