Chinese Physics C > 2006, Vol. 30 > Issue(S2): 141-145

Collective Band Structures of the Nuclei near N=82 Closed Shell in A=135 Region

Department of Physics,Tsinghua University,Beijing 100084,China2 China Institute of Atomic Energy,Beijing 102413,China

Abstract
HTML
Reference
Related

PDF

Abstract：
Through heavy-ion nuclear reactions and in-beam γ-ray spectroscopy technique, the high spin states of odd A ¹³⁷La and odd-odd ¹³⁸Pr nuclei which are located near the N=82 closed shell on A=135 region, have been studied. The ¹³⁰Te( ¹¹B,4n) and ¹²⁸Te( ¹⁴N,4n) reactions were used to populate the level states for ¹³⁷La and ¹³⁸Pr respectively. The level schemes of these two nuclei have been extended. In ¹³⁷La, four collective bands have been newly identified. Among them, the near-yrast band is with weak prolate deformation, and another one belongs to a oblate band. In ¹³⁸Pr，six collective bands have been observed. The yrast band is with weak prolate deformation also, and all the other five bands, two of which are newly identified by the present work, are assigned as the oblate bands. The characteristics for these collective bands, such as the signature inversion, the configuration origination etc. have been discussed.

References

[1]

. Paul E S et al. Phys. Rev. Lett., 1987, 58: 9842. Paul E S et al. Phys. Rev., 1989, C40: 12553. Bark R A et al. Nucl. Phys., 2001, A691: 5774. ZHU S J et al. Eur. Phys. J., 2005, A24: 1995. ZHU S J et al. Phys. Rev., 2000, C62: 0443106. ZHU S J et al. Chin. Phys. Lett., 1999, 16: 6357. LIU Y et al. Phys. Rev., 1996, C54: 718. Nakai K et al. Phys. Lett., 1973, B44: 4439. Kortelahti M et al. Nucl. Phys., 1982, A376: 110. Rizzutto M A et al. Z. Phys., 1992, A344: 22111. Gangopadhyay G et al. Eur. Phys. J., 2005, A24: 17312. Bengtsson R et al. Nucl. Phys., 1972, A237: 13913. Frauendorf S et al. Phys. Lett., 1981, B100: 21914. Frauendorf S et al. Phys. Lett., 1983, B125: 21915. Müller-Veggian M et al. Nucl. Phys., 1978, A304: 116. Ludziejewski J et al. Z. Phys., 1976, A277: 35717. Petrache C M et al. Nucl. Phys.,1988, A635: 36118. Petrache C M et al. Nucl. Phys., 1996, A597: 10619. Petrache C M et al. Nucl. Phys., 1996, A603: 5020. Kumar V et al. Eur. Phys. J., 2003, A17: 15321. Bark R A et al. Nucl. Phys., 2001, A691: 57722. LUO P et al. High Energy Phys. and Nucl. Phys., 2004,28: 495 (in Chinese)(骆鹏等. 高能物理与核物理, 2004, 28: 495)

[1]	FANG Yong-De,ZHANG Yu-Hu,ZHOU Xiao-Hong. Study of Quasiparticles Bands in Odd-Odd¹⁸⁸Au. Chinese Physics C, 2006, 30(2): 99-104.
[2]	ZHANG Jun-Shun,ZHANG Rui-Ping,LUO Yan-An,PAN Feng. SD Pair Shell Model: Influence of Pair Structure on the Collectivity of Low-lying States. Chinese Physics C, 2006, 30(8): 755-758.
[3]	CHE Xing-Lai,ZHU Sheng-Jiang,CHEN Yong-Jing,DING Huai-Bo,LI Ming-Liang. High Spin Band Structure in¹¹²Ru. Chinese Physics C, 2006, 30(S2): 154-156.
[4]	SONG Li-Tao,ZHOU Xiao-Hong,ZHANG Yu-Hu,GUO Ying-Xiang,LEI Xiang-Guo,ZHENG Yong,LIU Min-Liang,de Angelis. Experimental Study of High-Spin Band Structures of¹⁸³Au. Chinese Physics C, 2005, 29(8): 736-740.
[5]	LIU Lei,CHU Wang-Sheng,ZHONG Jun,MA Si-Xuan,GAO Bin,WU Zi-Yu,GAN Li-Hua,SHU Chun-Ying,WANG Chun-Ru. Preparation and EXAFS Study of Endohedral Metallofulleren Y@C₈₂. Chinese Physics C, 2005, 29(S1): 102-105.
[6]	ZHU Sheng-Jiang,XIAO Shu-Dong,CHE Xing-Lai,YU Ying-Nan,LI Ming-Liang,CHEN Yong-Jing,ZHU Li-Hua,WEN Shu-Xian,WU Xiao-Guang,LI Guang-Sheng. Collective Dand Structures in Doubly Odd¹³⁶La Nucleus. Chinese Physics C, 2005, 29(11): 1047-1051.
[7]	SONG Li-Tao,ZHOU Xiao-Hong,ZHANG Yu-Hu,GUO Ying-Xiang,SUN Zhi-Yu. Study of the 1/2[660] Rotational Band in^{179,183^Au}. Chinese Physics C, 2004, 28(S1): 59-61.
[8]	XU Chang,REN Zhong-Zhou. Study on the Unfavored α-Decay Lifetimes around a Closed Shell. Chinese Physics C, 2004, 28(5): 502-506.
[9]	LIU Min-Liang,ZHANG Yu-Hu,ZHOU Xiao-Hong,GUO Ying-Xiang,LIU Zhong,LEI Xiang-Guo,HE Jian-Jun,ZHENG Yong,ZHU Li-Hua,WEN Shu-Xian. Empirical Shell Model and High-Spin Level Structure of Near-spherical Nucleus¹⁴²Pm. Chinese Physics C, 2004, 28(S1): 62-65.
[10]	CHE Xing-Lai,ZHU Sheng-Jiang,LI Ming-Liang,YU Yong-Nan. Identification of Collective Bands in Neutron-Rich¹⁰⁸Ru Nucleus. Chinese Physics C, 2004, 28(S1): 56-58.
[11]	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 in¹³⁵La Nucleus. Chinese Physics C, 2004, 28(5): 495-501.
[12]	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.
[13]	ZHANG Yu-Hu,ZHOU Xiao-Hong. Experimental Study of High-Spin Band Structures in Odd-Odd¹⁷²Re. Chinese Physics C, 2003, 27(7): 574-580.
[14]	ZHU Sheng-Jiang,XU Rui-Qing,ZHANG Zheng,JIANG Zhuo,GAN Cui-Yun. Collective Bands in Neutron-Rich¹⁰⁷Ru Nucleus. Chinese Physics C, 2002, 26(8): 791-796.
[15]	ZHU ShengJiang,GAN CuiYun,ZHU LingYan,YANG LiMing,XU RuiQing,JON MyonGil,JIANG Zhuo,ZHANG Zheng,. Collective Band Structures in Neutron-Rich Odd-A^145,147Ce Nuclei. Chinese Physics C, 2000, 24(11): 1018-1023.
[16]	Qin Zhi,Li Wenxin,Zhao Lili,Wen Wanxin,Luo Qingzheng,Sun Tongyu,,,,,. Mass Yield Distribution of Target Residues from the Interaction of Iron with 135MeV/u¹²C Ions. Chinese Physics C, 1995, 19(6): 481-488.
[17]	Wu Huifang,Song Changliang. The 2νββ Decay Lifetime and the Shell Model Wavefunction in⁸²Se. Chinese Physics C, 1994, 18(4): 366-370.
[18]	LI Xian-Yin,ZHAO Xiao-Feng,WANG Yu-Cheng,LIU Yong. Microscopic Analysis of Intruder States and Configuration Mixing in Even-Even Nuclei Near Closed Shells. Chinese Physics C, 1991, 15(10): 928-936.
[19]	LIU Yong,QI Hui,YANG Ze-Sen. Microscopic Description of Intruder States in Doubly Even Nuclei Near Closed Shells. Chinese Physics C, 1991, 15(1): 52-58.
[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

ZHU Sheng-Jiang, LI Ming-Liang, CHE Xing-Lai, XIAO Shu-Dong, CHEN Yong-Jing, YU Ying-Nan, DING Hui-Bo, XU Qiang, ZHU Li-Hua, WEN Shu-Xian, WU Xiao-Guang, LI Guang-Sheng and Collective Band Structures of the Nuclei near N=82 Closed Shell in A=135 Region[J]. Chinese Physics C, 2006, 30(S2): 141-145.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-10-16
Revised: 1900-01-01

Article Metric

Article Views(4984)
PDF Downloads(650)
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

Collective Band Structures of the Nuclei near N=82 Closed Shell in A=135 Region

Corresponding author:ZHU Sheng-Jiang,

Department of Physics,Tsinghua University,Beijing 100084,China2 China Institute of Atomic Energy,Beijing 102413,China

Received Date:2006-10-16

Accepted Date:1900-01-01

Available Online:2006-01-03

Abstract:Through heavy-ion nuclear reactions and in-beam γ-ray spectroscopy technique, the high spin states of odd A¹³⁷La and odd-odd¹³⁸Pr nuclei which are located near the N=82 closed shell on A=135 region, have been studied. The¹³⁰Te(¹¹B,4n) and¹²⁸Te(¹⁴N,4n) reactions were used to populate the level states for¹³⁷La and¹³⁸Pr respectively. The level schemes of these two nuclei have been extended. In¹³⁷La, four collective bands have been newly identified. Among them, the near-yrast band is with weak prolate deformation, and another one belongs to a oblate band. In¹³⁸Pr，six collective bands have been observed. The yrast band is with weak prolate deformation also, and all the other five bands, two of which are newly identified by the present work, are assigned as the oblate bands. The characteristics for these collective bands, such as the signature inversion, the configuration origination etc. have been discussed.

HTML

Reference (1)

Collective Band Structures of the Nuclei near N=82 Closed Shell in A=135 Region

Abstract：

References

Access

Article Metrics

Metrics

通讯作者:陈斌, bchen63@163.com

Email This Article