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

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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

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[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.

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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

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

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通讯作者: 陈斌, bchen63@163.com

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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.

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

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通讯作者: 陈斌, bchen63@163.com

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