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

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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 in ¹¹⁸Cd 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

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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.

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Received: 2003-05-16
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

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 of²⁵²Cf 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 in¹¹⁸Cd has been established.

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

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