Signature Inversion in the Odd-Odd Nuclei with Mass A～80

SHEN Shui-Fa; WANG Feng-Ge; PENG Nie; CHEN Heng-Gui; LU Hao; WU Yong-Peng

Chinese Physics C> 2006, Vol. 30> Issue(12) : 1234-1237

Signature Inversion in the Odd-Odd Nuclei with Mass A～80

Key Laboratory of Nuclear Resources and Environment East China Institute of Technology,Ministry of Education, Nanchang 330013, China2 School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China3 School of Physics, Peking University, Beijing 100871, China4 School of Electric and Information Engineering, Zhongyun University of Technology , Zhengzhou 450007, China

Abstract
HTML
Reference
Related

PDF

Abstract：
To understand the microscopic origin of the signature inversion in the yrast positive-parity bands of doubly odd Rb nuclei, as an example, we performed calculations using the projected shell model (PSM) to describe the energy spectra in ⁸²Rb. It can be seen that the main features are reproduced in the calculations. This analysis shows clearly that the signature splitting and especially the signature inversion are reproduced only by a varying γ deformation with increasing spin.

References

[1]

Bengtsson R, Frisk H, May F R et al. Nucl. Phys., 1987, A415: 1892 Hamamoto I. Phys. Lett., 1990, B235: 2213 Jain A K, Goel A. Phys. Lett., 1992, B277: 2334 Hara K, Sun Y. Z. Phys., 1991, A339: 155 Matsuzaki M. Phys. Lett., 1991, B269: 236 Tajima N. Nucl. Phys., 1994, A572: 3657 Yoshida N et al. Nucl. Phys., 1994, A567: 178 ZHENG R et al. Phys. Rev., 2001, C64: 0143139 Plettner C et al. Phys. Rev. Lett., 2000, 85: 245410 Palit R et al. Phys. Rev., 2003, C67: 01432111 Doring J et al. Phys. Rev., 1999, C59: 7112 Szyma ski Z. Fast Nuclear Rotation. Oxford: Clarendon Press, 198313 Aage Bohr, Ben R. Mottelson. Nuclear Structure. Vol 1. Benjamin; New York: Amsterdam, 1969, 16914 Moller P, Nix J R, Myers W D et al. Atomic Data and Nuclear Data Tables, 1995, 59: 18515 ZHANG J Y et al. Phys. Rev., 1989, C39: 71416 Hara K, Sun Y. Int. J. Mod. Phys., 1995, E4: 63717 Schwengner R et al. Phys. Rev., 2002, C66: 02431018 Schnare H et al. Phys. Rev. Lett., 1999, 82: 440819 Dejbakhsh H, Mouchaty G, Schmitt R P. Phys. Rev., 1991, C44: 11920 HAN Guang-Bing, WEN Shu-Xian, LIU Xiang-An et al. HEP NP, 1999, 23: 890(in Chinese)(韩广兵, 温书贤, 刘祥安等. 高能物理与核物理, 1999, 23: 890

[1]	HE Chuang-Ye , ZHU Li-Hua , WU Xiao-Guang , WANG Zhi-Min , LIU Ying , SUN Hui-Bin , WEN Shu-Xian , LI Guang-Sheng , YANG Chun-Xiang . Systematics of Signature Inversion in Odd-Odd Nuclei in the A～100 Mass Region. Chinese Physics C, 2006, 30(S2): 175-176.
[2]	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.
[3]	TANG Jie , LIU Yu-Xin . Systematic Description of the Superdeformed Bands of the Odd-A Nuclei in the A≈190 Mass Region. Chinese Physics C, 2004, 28(10): 1055-1064.
[4]	HE Xiao-Tao , YU Shao-Ying , LIU Shu-Xin , ZENG Jin-Yan , ZHAO En-Guang . Study of the Identical Bands of Odd-A and Odd-Odd Nuclei in the A～190 Mass Region. Chinese Physics C, 2004, 28(12): 1366-1369.
[5]	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.
[6]	HE Xiao-Tao , LIU Shu-Xin , YU Shao-Ying , ZHAO En-Guang . Double-Blocking Effects in Odd-odd Superdeformed Nucleus ¹⁹⁴Tl. Chinese Physics C, 2003, 27(2): 124-126.
[7]	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.
[8]	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. Chinese Physics C, 2003, 27(9): 784-788.
[9]	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.
[10]	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.
[11]	YU Lei , LIU Shu-Xin , LEI Yi-An , ZENG Jin-Yan . Underlying Physics of Identical Odd-and Even-Mass Bands in Normally Deformed Rare-Earth Nuclei. Chinese Physics C, 2001, 25(6): 526-532.
[12]	LIU Zhong . A Test Experiment for the Study of Excited States in Z≈56, N≈80 Nuclei Via Deep Inelastic Reactions. Chinese Physics C, 2001, 25(9): 845-849.
[13]	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.
[14]	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.
[15]	ZHANG YuHu . Signature Inversion in the Rotational Bands of Odd-Odd ¹⁷⁸Ir. Chinese Physics C, 2000, 24(12): 1123-1130.
[16]	Wu Chongshi , Li Zhonghua . Re-discussion of the Spin Assignments of the Superdeformed Bands in A≈190 Region (Ⅱ) Odd Superdeformed Nuclei. Chinese Physics C, 1999, 23(8): 797-802.
[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]	XING Zheng , XIE Hong-Xing . PROPERTIES OF M1 AND E2 TRANSITIONS IN ODD-A RARE-EARTH NUCLEI. Chinese Physics C, 1989, 13(3): 269-277.
[19]	ZHANG Jing-Ye , Zhong Ji-Quan , LI Bao-An . THE PROTON AND NEUTRON SUBSHELLS AND THE INTERPLAY BETWEEN THEM (Ⅰ)——A≈80—100 REGION. Chinese Physics C, 1985, 9(6): 736-741.
[20]	R.L.Robinson , A.V.Ramayya . DISCOVERY OF MULTIPLE,COLLECTIVE BAND STRUCTURES IN NUCLEI WITH A=60—80. Chinese Physics C, 1979, 3(3): 355-381.

Access

Get Citation

SHEN Shui-Fa, WANG Feng-Ge, PENG Nie, CHEN Heng-Gui, LU Hao and WU Yong-Peng. Signature Inversion in the Odd-Odd Nuclei with Mass A～80[J]. Chinese Physics C, 2006, 30(12): 1234-1237.

SHEN Shui-Fa, WANG Feng-Ge, PENG Nie, CHEN Heng-Gui, LU Hao and WU Yong-Peng. Signature Inversion in the Odd-Odd Nuclei with Mass A～80[J]. Chinese Physics C, 2006, 30(12): 1234-1237. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-07-10
Revised: 1900-01-01

Article Metric

Article Views(3110)
PDF Downloads(762)
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 Inversion in the Odd-Odd Nuclei with Mass A～80

Corresponding author: SHEN Shui-Fa,

Key Laboratory of Nuclear Resources and Environment East China Institute of Technology,Ministry of Education, Nanchang 330013, China2 School of Nuclear Engineering and Technology, East China Institute of Technology, Fuzhou 344000, China3 School of Physics, Peking University, Beijing 100871, China4 School of Electric and Information Engineering, Zhongyun University of Technology , Zhengzhou 450007, China

Received Date: 2006-07-10

Accepted Date: 1900-01-01

Available Online: 2006-12-05

Abstract: To understand the microscopic origin of the signature inversion in the yrast positive-parity bands of doubly odd Rb nuclei, as an example, we performed calculations using the projected shell model (PSM) to describe the energy spectra in ⁸²Rb. It can be seen that the main features are reproduced in the calculations. This analysis shows clearly that the signature splitting and especially the signature inversion are reproduced only by a varying γ deformation with increasing spin.

HTML

Reference (1)

Signature Inversion in the Odd-Odd Nuclei with Mass A～80

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article