Signature Splitting and Inversion and Back Bending in Negative Sideband in <SUP>80</SUP>Rb

HE Chuang-Ye; WEN Shu-Xian; ZHU Li-Hua; WANG Zhi-Min; LI Guang-Sheng; MA Rui-Gang; WU Xiao-Guang; YUAN Guan-Jun; YANG Chun-Xiang; WANG Yue; ZHANG Zhen-Long; MENG Rui

Chinese Physics C> 2003, Vol. 27> Issue(9) : 784-788

Signature Splitting and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb

China Institute of Atomic Energy, Beijing 102413,China2 Department of Physics, Jinlin University, Changchun 130023,China3 Department of Physics, Tsinghua University, Beijing 100084,China4 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

Abstract
HTML
Reference
Related

PDF

Abstract：
High spin states of ⁸⁰Rb have been studied by using fusion evaporation reactions,⁶⁵Cu+¹⁹F,⁶⁶Zn+¹⁸O and ⁶⁸Zn+¹⁶O with beam energies of 75MeV, 76MeV and 80MeV, respectively, at HI-13 Tandem accelerator Beijing and JAERI Japan. γ-γ coincidence and DCO ratios were measured by the HPGe detector systems. About twenty new γ transitions are added to the previously proposed level schema from the present experiments. The second negative band is pushed up from 12^－ to 22^－. Abackbending at frequency of 0.49MeV is observed. Evidence has also been found for two hitherto unknown sidebands built on the negative yrast band. Signature splitting in both negative bands is observed. Signature inversion occurs only in the yrast negative band at spin of 15 and it is close to that of ⁸²Y. The plots of [E(I)-E(I-1)]/(2I) vs I are given and compared with its isotones ⁷⁸Br and ⁸²Y as well as its isotopes ⁷⁶Rb and ⁷⁸Rb.

References

[1]

. Harder A ,Kabadiyski M K ,Lieb K P et al.Phys.Rev.,1995,C51(6):2932—29412. Kaye R A ,Dring J,Holcomb J W et al.Phys.Rev.,1996,C51(3):1038—10563. Landulfo E ,Winchell D F ,Saladin J X et al.Phys.Rev.,1996,C54(2):626—6374. Paul S D ,Jain H C ,Chattopadhyay S et al.Phys.Rev.,1995,C51(6):2959—29725. Tandel S K ,Patel S B ,Bhowmik R K et al.Nucl.Phys.,1998,A632:3—186. DringJ,Winter G ,Funke L et al.[J].Phys.Rev.,1992,C46:R2127

[1]	ZHOU Wen-Ping , MA Ying-Jun , LU Jing-Bin , ZHAO Guang-Yi , WANG Shou-Yu , SUN Liang , YANG Dong , ZHAO Yan-Xin , LI Xian-Feng , LIU Yun-Zuo , ZHU Li-Hua , WU Xiao-Guang , CUI Xing , , . Signature Inversion in Weakly-Deformed Doubly-Odd ¹⁵⁸Tm. Chinese Physics C, 2006, 30(10): 988-995.
[2]	ZHANG Yu-Hu , ZHOU Xiao-Hong , HE Jian-Jun , LIU Zhong , FANG Yong-De , GUO Wen-Tao , LEI Xiang-Guo , GUO Ying-Xiang , MA Long , Moyo Ndontchueng . Search for Signature Inversion in the πi_13/2⊙νi_13/2 Bands in ^182,184,186Au. Chinese Physics C, 2006, 30(S2): 208-210.
[3]	ZHOU Xiao-Hong , XING Ye-Bing , MA Long , ZHANG Yu-Hu , LIU Yuan . Low-Spin Signature Inversion in the πh_9/2⊙νi_13/2 Oblate Band. Chinese Physics C, 2006, 30(S2): 211-213.
[4]	MA Long , ZHOU Xiao-Hong , ZHANG Yu-Hu , GUO Ying-Xiang . Signature Inversion in the πh_9/2×υi_13/2 Oblate Band of 188TL. Chinese Physics C, 2006, 30(5): 402-404.
[5]	SHEN Shui-Fa , WANG Feng-Ge , PENG Nie , CHEN Heng-Gui , LU Hao , WU Yong-Peng . Signature Inversion in the Odd-Odd Nuclei with Mass A～80. Chinese Physics C, 2006, 30(12): 1234-1237.
[6]	ZHANG Ao , LIU Yan-Rui , HUANG Peng-Zhi , DENG Wei-Zhen , CHEN Xiao-Lin , ZHU Shi-Lin . JP=21－Pentaquarks in Jaffe and Wilczek's Diquark Model. Chinese Physics C, 2005, 29(3): 250-257.
[7]	XIAO Shu-Dong , ZHU Sheng-Jiang , YANG Li-Ming , ZHANG Zheng , JIANG Zhuo , CHE Xing-Lai , U Yong-Nan . High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei. Chinese Physics C, 2004, 28(1): 37-41.
[8]	ZHOU Xiao-Hong , XIE Cheng-Ying , ZHANG Yu-Hu , GUO Ying-Xiang , LEI Xiang-Guo , ZHENG Yong , LIU Min-Liang , SONG Li-Tao , WANG Hua-Lei , YU Hai-Ping , LUO Peng , GUO Wen-Tao , , . Signature Inversion in the πh_9/2⊙νi_13/2 Oblate Band of ¹⁹⁰Tl. Chinese Physics C, 2004, 28(10): 1045-1049.
[9]	SHEN Shui-Fa , GU Jia-Hui , SHEN Wen-Qing . Calculation of Yrast Bands for Odd-Odd Nuclei ^80,82Rb in A≈80 Mass Region. Chinese Physics C, 2004, 28(3): 274-279.
[10]	ZHANG Yu-Hu , ZHOU Xiao-Hong , HE Jian-Jun , LIU Zhong , GAN Zai-Guo , , , , , , , , , , . Study of Signature Inversion in the πi_13/2νi_13/2Bands of Odd Odd Nuclei. Chinese Physics C, 2003, 27(4): 313-318.
[11]	XU Yan-Bing , LIAO Ji-Zhi . Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei. Chinese Physics C, 2003, 27(2): 142-146.
[12]	DENG Fu-Guo , YANG Chun-Xiang , SUN Hui-Bin , WU Xiao-Guang , LU Jing-Bin , ZHAO Guang-Yi , HAN Guang-Bing , PENG Zhao-Hua , YIN Li-Chang , WEN Shu-Xian , LI Guang-Sheng , YUAN Guan-Ju , , , . Study on the High-Spin States and Signature Inversion of Odd-Odd Nucleus ¹⁷⁰ Ta. Chinese Physics C, 2002, 26(5): 491-500.
[13]	ZHANG Yu-Hu , WEN Shu-Xian , ZHU Li-Hua . Signature Inversion Phenomena in the Rotational Bands of Odd-Odd ¹⁷⁶Ir. Chinese Physics C, 2002, 26(5): 445-449.
[14]	XU Yan-Bing , LIAO Ji-Zhi . Studies on the HF States and the Negative Parity Bands of Even Even Ge and Se Nuclei. Chinese Physics C, 2002, 26(6): 613-619.
[15]	WU Chong-Shi . Signature Partners in Superdeformed ¹⁴⁹Tb. Chinese Physics C, 2001, 25(3): 205-211.
[16]	ZHANG YuHu . Signature Inversion in the Rotational Bands of Odd-Odd ¹⁷⁸Ir. Chinese Physics C, 2000, 24(12): 1123-1130.
[17]	WU XingJu , LIANG YuSheng , XU JinZhang , CHEN XingQu , XING Zheng . Study of the Negative-Parity Yrast States in Odd-A Lu-Isotopes. Chinese Physics C, 2000, 24(4): 342-346.
[18]	Liu Zhong , Sun Xiangfu , Guo Yingxiang , Lei Xiangguo , Chen Xinfeng , Zhou Xiaohong , Zhang Yuhu , Jin Hanjuan , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang , Liu Xiang . Lifetime Measurement of the Negative-Parity Isomers in ¹¹⁷Xe. Chinese Physics C, 1997, 21(10): 881-885.
[19]	Shi Zongren , Wan Shuying . Negative Parity States of Collective Motion in Actinide Nuclei. Chinese Physics C, 1995, 19(5): 438-446.
[20]	WU RUA-CHUAN . INTERACTING BOSON MODEL FOR ROTATIONAL STATES OF NEGATIVE PARITY. Chinese Physics C, 1982, 6(5): 601-608.

Access

Get Citation

HE Chuang-Ye, WEN Shu-Xian, ZHU Li-Hua, WANG Zhi-Min, LI Guang-Sheng, MA Rui-Gang, WU Xiao-Guang, YUAN Guan-Jun, YANG Chun-Xiang, WANG Yue, ZHANG Zhen-Long, MENG Rui, Signature Splitting and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb[J]. Chinese Physics C, 2003, 27(9): 784-788.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2002-11-28
Revised: 1900-01-01

Article Metric

Article Views(3570)
PDF Downloads(693)
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 and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb

Corresponding author: HE Chuang-Ye,

China Institute of Atomic Energy, Beijing 102413,China2 Department of Physics, Jinlin University, Changchun 130023,China3 Department of Physics, Tsinghua University, Beijing 100084,China4 Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan

Received Date: 2002-11-28

Accepted Date: 1900-01-01

Available Online: 2003-09-05

Abstract: High spin states of ⁸⁰Rb have been studied by using fusion evaporation reactions,⁶⁵Cu+¹⁹F,⁶⁶Zn+¹⁸O and ⁶⁸Zn+¹⁶O with beam energies of 75MeV, 76MeV and 80MeV, respectively, at HI-13 Tandem accelerator Beijing and JAERI Japan. γ-γ coincidence and DCO ratios were measured by the HPGe detector systems. About twenty new γ transitions are added to the previously proposed level schema from the present experiments. The second negative band is pushed up from 12^－ to 22^－. Abackbending at frequency of 0.49MeV is observed. Evidence has also been found for two hitherto unknown sidebands built on the negative yrast band. Signature splitting in both negative bands is observed. Signature inversion occurs only in the yrast negative band at spin of 15 and it is close to that of ⁸²Y. The plots of [E(I)-E(I-1)]/(2I) vs I are given and compared with its isotones ⁷⁸Br and ⁸²Y as well as its isotopes ⁷⁶Rb and ⁷⁸Rb.

HTML

Reference (1)

Signature Splitting and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Signature Splitting and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb

Corresponding author: HE Chuang-Ye,

HTML

目录

Signature Splitting and Inversion and Back Bending in Negative Sideband in 80Rb

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Signature Splitting and Inversion and Back Bending in Negative Sideband in 80Rb

Corresponding author: HE Chuang-Ye,

HTML

目录

Signature Splitting and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb

Signature Splitting and Inversion and Back Bending in Negative Sideband in ⁸⁰Rb