Experimental Study of High-spin States in Odd-Odd Nuclei around 160-180 Mass Region

ZHANG Yu-Hu; ZHAO Qing-Zhong; ZHANG Shuang-Quan; ZHOU Xiao-Hong; XU Hu-Shan; HUANG Wen-Xue; GUO Ying-Xiang; LEI Xiang-Guo; LIU Zhong; LU Jun; FENG Xi-Chen; GOU Quan-Bu

Chinese Physics C> 2000, Vol. 24> Issue(S1) : 21-28

Experimental Study of High-spin States in Odd-Odd Nuclei around 160-180 Mass Region

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China2 China Institute of Atomic Energy,Beijing 102413,China3 Japan Atomic Energy Research Institute,Tokai,Ibaraki 319-1195,Japan4 Chiba University,Inage-ku,Chiba 263-8512,Japan5 Chiba Institute of Technology,Narashino,Chiba 275-0023,Japan6 Institute of Physics and Tandem Accelerator Center,University of Tsukuba,Ibaraki 305-0006,Japan

Abstract
HTML
Reference
Related

PDF

Abstract：
In recent years,high-spin states in a series of deformed odd-odd nuclei ¹⁶²Lu,¹⁷⁰Ta,¹⁷⁴Re,^176,178,180Ir and 182Au have been studied in corporation with the researchers in the IMP (Institute of Modem Physics,CAS),CIAE (China Institute of Atomic Energy) and JAERI (Japan Atomic Energy Research Institute).The experimental results are reviewed in this report.The interesting phenomenon of low-spin signature inversion in both the πh_11/2⊙νi_13/2 and πh_9/2⊙νi_13/2 configurations has been systematically studied and discussed for the nuclei in this mass region.A possible lowspin signature inversion is suggested for the πh_13/2⊙νi_13/2 structure in ^182,184Au and the limited experimental data seem to support such suggestion.The gradual alignment gains with rotation are reported ,for the first time,in the πh_11/2⊙νi_13/2 bands of odd-odd ^178,180Ir.An unexpected smaller band crossing frequency is observed in ¹⁷⁸Ir(most probably in the πd_5/2⊙νh_9/2 configuration).These anomalies may be associated with the configuration-dependent deformations and/or neutron pairing.

References

[1]

Jain A K,Sheline R K,Headly D M et al. Rev. of Mod. Phys. ,1998,70:843-8952 Bengtsson R, Frisk R H, May R F et al. Nucl. Phys. ,1984, A415: 189-2143 LIU Y Z, MA Y J,YANG H T et al. Phys.Rev. .1995,C52:2514-25194 Bark R A,Espino J M,Reviol W et al.Phys. Lett. ,1997, B;106:193-1995 Cardona M A, Kreiner A J , Hojman D et al. Phys. Rev. , 1999, C59 : 1298-13156 ZHANG Y H, ZHANGSQ, ZHAOQZetal. Phys. Rev., 1999, C60: 044311-1--044311-127 Bark R A, Carlmn, Freeman S J et al. Nucl. Phys. , 1998, A630: 603-6308 ZHANG Y H, ZHOU X H, ZHAO Q Z et al. Chin. Jour. of Nucl. Phys. , 1995, 17: 2-253 ; Z. Phys. , 1996,A355 : 335-3369 ZHANG Y H, ZHAO Q Z, ZHOU X H et al. High Energy Phys. and Nucl. Phys. , 1997,21:393-401 (in Chinese)(张玉虎，赵庆中.周小红等.高能物理与核物理，1997,21:393-401)10 ZHANG Y H, Hayakawa T, Oshirna M et al. High Energy Phys. and Nucl. Phys. , 2000, 24: 1123-1130 (in Chinese)(张玉虎，Hayakawa T, Oshitna M et al.高能物理与核物理，2000, 24:1123-1130)11 ZHANG Y H, Hayakawa T, Oshima M et al. Eur. Phys. J. , 1999, A5: 345-34912 ZHANG Y H et al. High Energy Phys. and Nucl. Phys. , 2000, 24: 369-372 (in Chinese) ; Euro. Phys. J. ,2000,A7 : 1-22(张玉虎等.高能物理与核物理，2000,24:369-372)13 Firestone R B, Shirley V S, Baglin C M et al. Table of Isotopes, 1996, 2: 213914 Hamarnoto I. Phys. Lett. , 1990, 8235 :221-22415 Ibrahim F, Hojman D, Kreiner A J et al. Phys. Rev. , 1996, C53: 1547-155616 Janzen V P, LNU Z M, Capenter M P et d. Phys. Rev. , 1996, C45:613-639

[1]	HUA Hui , WAMG Shuo , MENG Jie , LI Zhi-Huan , ZHANG Shuang-Quan , XU Fu-Rong , LIU Hong-Liang , ZHOU Shan-Gui , YE Yan-Lin , JIANG Dong-Xing , ZHENG Tao , ZHU Li-Hua , WU Xiao-G , , , . High-Spin States in ¹⁵²Gd. Chinese Physics C, 2006, 30(S2): 157-159.
[2]	YU Shao-Ying , TU Ya , CHEN Yong-Shou , SHEN Cai-Wan . Theoretical Research on Traxial Superdeformed Band and High Spin State Nuclei in ¹⁶⁸Lu. Chinese Physics C, 2005, 29(3): 258-262.
[3]	LUO Peng , ZHANG Yu-Hu , ZHOU Xiao-Hong , LIU Min-Liang , GUO Ying-Xiang , LIU Zhong , LEI Xiang-Guo , SONG Li-Tao , ZHENG Yong , WANG Hua-Lei , YU Hai-Ping , XIE Cheng-Ying , . Experimental Observation of High Spin States in ¹³⁵La Nucleus. Chinese Physics C, 2004, 28(5): 495-501.
[4]	LIU Ying , LI Ming-Fei , ZHU Li-Hua , WANG Zhi-Min , WU Xiao-Guang , CUI Xing-Zhu , HE Chuang-Ye , ZHANG Zhen-Long , MENG Rui , MA Rui-Gang , LI Guang-Sheng , WEN Shu-Xian , , . Experimental Study on High Spin States of ¹⁵⁶Tm. Chinese Physics C, 2004, 28(S1): 31-33.
[5]	YU Hai-Ping , GUO Ying-Xiang , LEI Xiang-Guo , ZHANG Yu-Hu , ZHOU Xiao-Hong , LUO Peng , LIU Min-Liang , SONG Li-Tao , WANG Hua-Lei , XIE Cheng-Ying , ZHENG Yong , GUO Wen-Tao , , . High-Spin Level Scheme of Odd-Odd ¹⁴⁰Pr Nucleus. Chinese Physics C, 2004, 28(8): 806-809.
[6]	WANG Hua-Lei , ZHANG Yu-Hu , ZHOU Xiao-Hong , GUO Ying-Xiang , LEI Xiang-Guo , LIU Min-Liang , LUO Peng , XIE Cheng-Ying , SONG Li-Tao , YU Hai-Ping , ZHENG Yong , GUO Wen-Tao , , , , . Experimental Study of High-Spin States in Odd-Odd ¹⁷⁰Re. Chinese Physics C, 2004, 28(7): 699-705.
[7]	DI Yao-Min . Discussion of Spin Assignment of the Signature Partner Bands in Odd-A Superdeformed Nuclei in A≈190 Region. Chinese Physics C, 2003, 27(3): 227-232.
[8]	LIU Jian-Feng , JIA Min , ZHAO Wei-Juan . Study on the Giant Dipole Resonance Model for γ Production Mechanisms Induced by Fast Nutrons in the Nuclear Mass Region 180≤A≤210. Chinese Physics C, 2003, 27(5): 430-435.
[9]	DI Yao-Min . Analysis by Synthesis of the Spin Assignment for the Superdeformed Single Bands in A≈190 Odd Nuclei. Chinese Physics C, 2003, 27(6): 503-506.
[10]	ZHANG Yu-Hu , ZHOU Xiao-Hong . Experimental Study of High-Spin Band Structures in Odd-Odd ¹⁷²Re. Chinese Physics C, 2003, 27(7): 574-580.
[11]	LIU Min-Liang , ZHANG Yu-Hu , ZHOU Xiao-Hong , HE Jian-Jun , GUO Ying-Xiang , LEI Xiang-Guo , HUANG Wen-Xue , LIU Zhong , LUO Yi-Xiao , FENG Xi-Chen , ZHANG Shuang-Quan , XU Xiao , , , , . High-Spin Level Scheme of Odd-odd ¹⁴²Pm. Chinese Physics C, 2002, 26(4): 354-358.
[12]	ZENG Guo-Mo , SONG Hui-Chao . Energy Level Structure of Odd-A Tm Isotopes in A≈160 Region. Chinese Physics C, 2002, 26(10): 1021-1026.
[13]	ZHANG Yu-Hu . Experimental Study of High-Spin States in Deformed Odd-Odd ¹⁸⁰ Ir. Chinese Physics C, 2002, 26(6): 582-588.
[14]	LIU Zhong . High Spin States in the N=50 Nucleus ⁸⁸Sr. Chinese Physics C, 2001, 25(10): 977-983.
[15]	ZHU Sheng-Jiang . Research on Octupole Deformation of Neutron-Rich Odd-A Nuclei and High Spin States of Some Neutron-Deficient Nuclei in A=130 Region. Chinese Physics C, 2000, 24(S1): 14-20.
[16]	Zhang Yuhu . Experimental Observation of High Spin States in ¹⁴⁶Sm Nucleus. Chinese Physics C, 1997, 21(2): 110-115.
[17]	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 lnversion of Yrast Bands in Doubly Odd Nuclei Around A=160 Mass Region. Chinese Physics C, 1997, 21(5): 393-401.
[18]	DIV align , Zhang Yuhu . Study of High Spin Isomer and its Decay Level Scheme of Doubly Odd ¹⁴⁴Pm Nucleus. Chinese Physics C, 1996, 20(5): 385-393.
[19]	Sun Huibin , Ma Yingjun , Liu Yunzuo , Zheng Hua , Wen Shuxian , Yang Chunxiang . Spin Determination of ¹⁶⁰Lu at High-Spin States. Chinese Physics C, 1995, 19(10): 929-935.
[20]	SHEN Xiao-Yan , HU Ji-Min . The Semiclassical Study of Nuclear High Spin States. Chinese Physics C, 1991, 15(8): 720-729.

Access

Get Citation

ZHANG Yu-Hu, ZHAO Qing-Zhong, ZHANG Shuang-Quan, ZHOU Xiao-Hong, XU Hu-Shan, HUANG Wen-Xue, GUO Ying-Xiang, LEI Xiang-Guo, LIU Zhong, LU Jun, FENG Xi-Chen, GOU Quan-Bu, Experimental Study of High-spin States in Odd-Odd Nuclei around 160-180 Mass Region[J]. Chinese Physics C, 2000, 24(S1): 21-28.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(1661)
PDF Downloads(594)
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

Experimental Study of High-spin States in Odd-Odd Nuclei around 160-180 Mass Region

Corresponding author: ZHANG Yu-Hu,

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China2 China Institute of Atomic Energy,Beijing 102413,China3 Japan Atomic Energy Research Institute,Tokai,Ibaraki 319-1195,Japan4 Chiba University,Inage-ku,Chiba 263-8512,Japan5 Chiba Institute of Technology,Narashino,Chiba 275-0023,Japan6 Institute of Physics and Tandem Accelerator Center,University of Tsukuba,Ibaraki 305-0006,Japan

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 2000-07-15

Abstract:

In recent years,high-spin states in a series of deformed odd-odd nuclei ¹⁶²Lu,¹⁷⁰Ta,¹⁷⁴Re,^176,178,180Ir and 182Au have been studied in corporation with the researchers in the IMP (Institute of Modem Physics,CAS),CIAE (China Institute of Atomic Energy) and JAERI (Japan Atomic Energy Research Institute).The experimental results are reviewed in this report.The interesting phenomenon of low-spin signature inversion in both the πh_11/2⊙νi_13/2 and πh_9/2⊙νi_13/2 configurations has been systematically studied and discussed for the nuclei in this mass region.A possible lowspin signature inversion is suggested for the πh_13/2⊙νi_13/2 structure in ^182,184Au and the limited experimental data seem to support such suggestion.The gradual alignment gains with rotation are reported ,for the first time,in the πh_11/2⊙νi_13/2 bands of odd-odd ^178,180Ir.An unexpected smaller band crossing frequency is observed in ¹⁷⁸Ir(most probably in the πd_5/2⊙νh_9/2 configuration).These anomalies may be associated with the configuration-dependent deformations and/or neutron pairing.

HTML

Reference (1)

Experimental Study of High-spin States in Odd-Odd Nuclei around 160-180 Mass Region

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article