High-Spin States and Negative Parity Levels in Neutron-Rich <SUP>116,118,120</SUP>Cd Nuclei

XIAO Shu-Dong; ZHU Sheng-Jiang; YANG Li-Ming; ZHANG Zheng; JIANG Zhuo; CHE Xing-Lai; U Yong-Nan

Chinese Physics C> 2004, Vol. 28> Issue(1) : 37-41

High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei

Department of Physics,Tsinghua University,Beijing 100084,China2 Department of Physics,Vanderbilt University,Nashville,TN 37235,USA3 Lawrence Berkeley National Laboratory,Berkeley,CA 94720,USA4 Department of Physics,Mississippi State University,MS 39762,USA

Abstract
HTML
Reference
Related

PDF

Abstract：
High spin states in neutron-rich ^116,118,120Cd nuclei have been investigated by observing high-fold prompt γ-ray coincidence events from the spontaneous fission of ²⁵²Cf with the Gammasphere detector array. The yrast bands have been extended with spin up to 18h in¹¹⁸Cd and 16h in ^116,120Cd respectively. The band structures are calculated using the cranked shell model and possible origination for the backbends in the yrast bands is discussed. Proposed 5^－ and 7^－ levels are observed in each of these cadmium isotopes, and possible explanation for the negative states is discussed based on systematic comparison. A quasi-rotational band based on 7^－ level in ¹¹⁸Cd has been established.

References

[1]

. Firestone Richard B.Table of Isotopes CD ROM (1998),Lawrence Berkeley National Laboratory,University of California 2. WANGY B et al.Phys.Rev.,2001,C64:054315 3. Aprahamian A et al.Phys.Rev.Lett.,1987,59:535 4. Fogelberg B et al.Phys.Lett.,1971,B36:3345　Watson D L et al.J.Phys.,1987,G13:1443 6. Juutinen S et al.Phys.Lett.,1996,B386:80 7. ZHU S J.Trends in Nucl.Phys.,1992,9(2):8(in Chinese)(朱胜江.核物理动态,1992,9(2):8) 8. Hamilton J H,Ramayya A V,ZHU S J et al.Prog.Part.Nucl.Phys.,1995,35:635 9. Durell J L.Proc.Int.Conf.on Spectroscopy of Heavy Nuclei,1989,Crete,Greece 1990,307 10. ZHU S J,Lee I Y.High Energy Phys.and Nucl.Phys.,1993,17:353(in Chinese)(朱胜江,LeeIY.高能物理与核物理,1993,17:353) 11. LONG G L,ZHU S J,SUN H Z.J.Phys.,1995,G21:331 12. Gade A,Brentano P von.Phys.Rev.,2002,C66:014304 13. Drissi S et al.Nucl.Phys.,1997,A614:137 14. Garrett P E et al.Phys.Rev.,1999,C59:2455 15. ZHU S J et al.Chin.Phys.Lett.,1998,15:793 16. ZHU S J et al.Phys.Lett.,1995,B357:27317. Rad ford D C.Nucl.Instr.Meth.,1995,A361:29718. ZHU S J et al.Phys.Rev.,1999,C59:1316 19. ZHU S J et al.Phys.Rev.,1999,C60:05130420. ZHU S J et al.Phys.Rev.,2001,C65:01430721. Zamfir N V et al.Phys.Rev.,1995:C51:99

[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]	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.
[3]	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.
[4]	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.
[5]	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 Nucleus ¹⁴²Pm. Chinese Physics C, 2004, 28(S1): 62-65.
[6]	WANG Zhi-Min¹ , WEN Shu-Xian¹ , WU Xiao-Guang¹ , PENG Zhao-Hua¹ , LI Guang-Sheng¹ , YUAN Guan-Jun¹ , MA Rui-Gang¹ , HE Chuang-Ye¹ , YANG Chun-Xiang¹ , GUO Ying-Xiang² , LEI Xiang-Guo² , HE Jian-Jun<sup . Study on High Spin States. Chinese Physics C, 2003, 27(1): 24-27.
[7]	HAN Yin-Lu . Theoretical Calculations and Analysis of Inelastic Scattering for n+^{116,118,120,122,124}Sn Reactions. Chinese Physics C, 2003, 27(5): 436-439.
[8]	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.
[9]	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.
[10]	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.
[11]	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.
[12]	LIU Zhong , ZHANG Yu-Hu , MA Ying-Jun . High-Spin States of the Neutron-Rich Nucleus ¹²⁵Sb. Chinese Physics C, 2002, 26(12): 1195-1200.
[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]	Han Guangbing , Wen Shuxian , Liu Xiangun , Wu Xiaoguang , Li Guangsheng , Yuan Guanjun , Weng Peikun , Yang Chunxiang , Ma Yingjun , Lu Jingbin . Study of the High Spin States of Stable ⁸⁴Sr. Chinese Physics C, 1999, 23(7): 601-606.
[16]	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.
[17]	Shi Zongren , Wan Shuying . Negative Parity States of Collective Motion in Actinide Nuclei. Chinese Physics C, 1995, 19(5): 438-446.
[18]	ZHU Sheng-Jiang . Research on Level Structures of Neutron-Rich Nuclei and Shape Phase Transitions Around A～100 and 150 Regions. Chinese Physics C, 1993, 17(4): 353-361.
[19]	SHEN Xiao-Yan , HU Ji-Min . The Semiclassical Study of Nuclear High Spin States. Chinese Physics C, 1991, 15(8): 720-729.
[20]	ZHU Sheng-Jiang , MA Wen-Chao . LEVEL STRUCTURE OF ¹⁵³Dy IN HIGH SPIN STATES AND SHAPE CHANGES WITH N AND I IN Dy NUCLEI. Chinese Physics C, 1990, 14(12): 1103-1109.

Access

Get Citation

XIAO Shu-Dong, ZHU Sheng-Jiang, YANG Li-Ming, ZHANG Zheng, JIANG Zhuo, CHE Xing-Lai and U Yong-Nan. High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei[J]. Chinese Physics C, 2004, 28(1): 37-41.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2003-05-16
Revised: 1900-01-01

Article Metric

Article Views(4233)
PDF Downloads(658)
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

High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei

Corresponding author: ZHU Sheng-Jiang,

Department of Physics,Tsinghua University,Beijing 100084,China2 Department of Physics,Vanderbilt University,Nashville,TN 37235,USA3 Lawrence Berkeley National Laboratory,Berkeley,CA 94720,USA4 Department of Physics,Mississippi State University,MS 39762,USA

Received Date: 2003-05-16

Accepted Date: 1900-01-01

Available Online: 2004-01-05

Abstract: High spin states in neutron-rich ^116,118,120Cd nuclei have been investigated by observing high-fold prompt γ-ray coincidence events from the spontaneous fission of ²⁵²Cf with the Gammasphere detector array. The yrast bands have been extended with spin up to 18h in¹¹⁸Cd and 16h in ^116,120Cd respectively. The band structures are calculated using the cranked shell model and possible origination for the backbends in the yrast bands is discussed. Proposed 5^－ and 7^－ levels are observed in each of these cadmium isotopes, and possible explanation for the negative states is discussed based on systematic comparison. A quasi-rotational band based on 7^－ level in ¹¹⁸Cd has been established.

HTML

Reference (1)

High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei

Corresponding author: ZHU Sheng-Jiang,

HTML

目录

High-Spin States and Negative Parity Levels in Neutron-Rich 116,118,120Cd Nuclei

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

High-Spin States and Negative Parity Levels in Neutron-Rich 116,118,120Cd Nuclei

Corresponding author: ZHU Sheng-Jiang,

HTML

目录

High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei

High-Spin States and Negative Parity Levels in Neutron-Rich ^116,118,120Cd Nuclei