Experimental Study of Level Structure in <SUP>207</SUP>Rn

LUO Wan-Ju; GUO Ying-Xiang; ZHOU Xiao-Hong; ZHANG Yu-Hu; LEI Xiang-Guo; LIU Zhong; HE Jian-Jun; ZHENG Yong; LIU Min-Liang; ZHU Li-Hua; WEN Shu-Xian

Chinese Physics C> 2003, Vol. 27> Issue(5) : 402-405

Experimental Study of Level Structure in ²⁰⁷Rn

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China2 China Institute of Atomic Energy,Beijing 102413,China

Abstract
HTML
Reference
Related

PDF

Abstract：
High spin states of ²⁰⁷Rn have been investigated via the ¹⁹⁶Pt(¹⁶O,5n)²⁰⁷Rn reaction at ¹⁶O energies from 85 to 95 MeV using techniques of in beam γ-ray spectroscopy. The measurements of γ-ray excitation fuction,γ-ray spectra,γ-γ-t coincidences and decay γ ray spectra were performed with 10 BGO(AC)HPGe detectors.Based on these measurements,a level scheme of ²⁰⁷Rn with 17 γ rays is established. The spins for most of the levels in the scheme are proposed according to the results of measured γ-ray DCO ratios. Comparing the structure between ²⁰⁸Rn and ²⁰⁷ Rn, the low lying levels in ²⁰⁷Rn are interpreted by coupling a valence neutron hole (f _5/2) to the excited states in ²⁰⁸Rn core.

References

[1]

. Horn D,Baktash C,Lister C J et al.Phys.Rev.,1981,C24:2136 2. Triggs W J,Poletti A R,Dracoulis G D et al.Nucl.Phys.,1983,A395:2743. Dracoulis G D,Fahlander C,Box P O et al.Nucl.Phys.,1982,A380:335 4. Horn D,Hausser O,Faestermann T et al.Phys.Rev.Lett.,1977,V39:3895. Dracoulis G D,Byrne A P,Stuchbery A E et al.Nucl.Phys.,1987,A467:305 6. Poletti A R,Dracoulis G D,Fahlander C et al.Nucl.Phys.,1985,A440:118 7. Dracoulis G D,Fahlander C,Morrison I et al.Nucl.Phys.,1981,A359:180 8. Stuchbery A E,Dracoulis G D,Byrne A P et al.Nucl.Phys.,1988,A482:692 9. New man H,Novak J R,Beausang C W et al.Phys.Rev.,2001,C64:027304 10. Novak J R,Beausang C W,Amzal N et al.Phys.Rev.,1999,C59:R2989 11. Rezanka I,Ladenbayer-Bellis I M,Rasmussen J O et al.Phys.Rev.,1974,C10:766 12. ZHANG Y H,Hayakawa T,Oshima M et al.Phys.Rev.,2001,C65:01430213. Fant B,Herrlander C J,Honkanen K et al.Nucl.Phys.,1985,A441:11 14. ZHOU X H,GUO Y X,ZHU S F et al.HEP NP,2001,25(8):725(in Chinese)(周小红,郭应祥,朱少飞等.高能物理与核物理,2001,25(8):725)

[1]	ZHANG Jin-Juan , XU Chang , REN Zhong-Zhou . Alpha-decay branching ratios to high-lying excited-states of the ²⁴²Cm→²³⁸Pu→²³⁴U→²³⁰Th→²²⁶Rn decay chain. Chinese Physics C, 2009, 33(9): 764-768. doi: 10.1088/1674-1137/33/9/010
[2]	SHEN Shui-Fa , WANG Feng-Ge , FANG Ke-Ming , XU Fu-Rong . Study of Nuclear Level Structure in Tc Isotopes with Mass A～100. Chinese Physics C, 2007, 31(6): 543-547.
[3]	CHE Xing-Lai , ZHU Sheng-Jiang , LI Ming-Liang , YU Ying-Nan , CHEN Yong-Jing , DING Hui-Bo , XU Qiang , ZHU Li-Hua , WU Xiao-Guang , LI Guang-Sheng , LIU Ying , HE Chuang-Ye . Level Structure with High Excitation States in ¹³⁴Ba. Chinese Physics C, 2007, 31(7): 621-624.
[4]	LIU Ying , LIANG Nai-Li , LI Ming-Fei , ZHU Li-Hua , WU Xiao-Guang , HE Chuang-Ye , CUI Xing-Zhu , LI Li-Hua , WANG Zhi-Min , LI Guang-Sheng , WEN Shu-Xian , HUO Jun-De , YANG Ch . Level Structure of ¹⁵⁵Tm. Chinese Physics C, 2006, 30(S2): 160-162.
[5]	WU Zhe-Ying , XU Fu-Rong . Octupole Deformation in Even-Even Rn-Th Nuclei. Chinese Physics C, 2006, 30(S2): 78-80.
[6]	SHEN Shui-Fa , LI Yan , GU Jia-Hui . New Low-spin Levels in ⁷⁶Se and Discussion of Its Yrast Band Structure. Chinese Physics C, 2005, 29(2): 139-146.
[7]	ZHANG Gao-Long , YE Yan-Lin , JIANG Dong-Xing , ZHENG Tao , LI Zhi-Huan , LI Xiang-Qing , WU Cui-E , CHEN Zhi-Qiang , HU Qing-Yuan , PANG Dan-Yang , WANG Jia . Experimental Study of the t+t Structure in 6He. Chinese Physics C, 2005, 29(10): 940-943.
[8]	ZHU Sheng-Jiang , ZHANG Zheng , XIAO Shu-Dong , CHE Xing-Lai , U Yong-Nan , LI Ming-Liang , ZHENG Ran-Cheng . Further Research on Level Structures of Neutron-Rich Odd-A Ru Nuclei. Chinese Physics C, 2005, 29(1): 23-27.
[9]	LI Jia-Xing , XIAO Guo-Qing , GUO Zhong-Yan , ZHAN Wen-Long , SUN ZHI-Yu , WANG Meng , WANG Jin-Chuan , HU Zheng-Guo , LI Chen , CHEN Li-Xin , MAO Rui-Shi . Experimental Study of the Exotic-Nuclei. Chinese Physics C, 2004, 28(12): 1256-1260.
[10]	WANG Shou-Yu , MA Ying-Jun , LIU Yun-Zuo , ZHANG Yu-Hu , LIANG Guo-Dong . High-Spin Level Scheme of ¹²⁶Cs. Chinese Physics C, 2004, 28(5): 491-494.
[11]	LUO Peng¹ , 2 , LIU Min-Liang¹ , LIU Zhong¹ , ZHANG Yu-Hu¹ , ZHOU Xiao-Hong¹ , GUO Ying-Xiang¹ , MA Ying-Jun³ , Y.Sasaki⁴ , K.Yamada⁴ , H.Ohshima⁴ , S.Yokose⁴ , M.Ishizuka⁴ , T.Komatsubara<sup . In-beam γ-Ray Spectroscopy of Level Structure in ¹³⁴Ba. Chinese Physics C, 2004, 28(3): 268-273.
[12]	ZHANG Yu-Hu , ZHOU Xiao-Hong . Experimental Study of High-Spin Band Structures in Odd-Odd ¹⁷²Re. Chinese Physics C, 2003, 27(7): 574-580.
[13]	XIE Cheng-Ying , ZHOU Xiao-Hong , ZHENG Yong , ZHANG Yu-Hu , LIU Zhong , PAN Qiang-Yan , GAN Zai-Guo . Study of Level Structure in ¹⁴⁶Tb. Chinese Physics C, 2003, 27(10): 884-887.
[14]	ZHOU Xiao-Hong , GUO Ying-Xiang , ZHU Shao-Fei , LEI Xiang-Guo , LIU Min-Liang , LIU Zhong , ZHANG Yu-Hu , HE Jian-Jun , ZHENG Yong , LUO Yi-Xiao . Level Structure in ²⁰⁹Fr. Chinese Physics C, 2001, 25(8): 725-730.
[15]	Yu Xiaohan , Shi Shuanghui , Gu Jiahui , Liu Jingyi , Li Wenxin , Zeng Jiping , Tian Jiaqi , Li Yan , Zhou Jianzhong . Low-lying Level Structure of ⁸³Rb. Chinese Physics C, 1998, 22(12): 1082-1091.
[16]	Zhang Changhua , Gu Jinnan . Structure of Nuclei in Lead Region (I) Spectra of ^207-210Tl and ^207,208Hg. Chinese Physics C, 1997, 21(S3): 71-78.
[17]	Zhang Changhua , Gu Jinnan . Nuclear Structure in Lead Region(I) Energy Spectra and Wavefunctions of ^207—210T1 and ^207,208Hg. Chinese Physics C, 1997, 21(8): 734-739.
[18]	Zhou Xiaohong , Sun Xiangfu , Guo Yingxiang , Lei Xiangguo , Liu Zhong , Chen Xinfeng , Zhang Yuhu , Jin Hanjuan , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Study of Excited States in Neutron-Deficient ¹⁹⁷Bi. Chinese Physics C, 1995, 19(11): 961-967.
[19]	Zhou Xiaohong , Sun Xiangfu , Lei Xiangguo , Jin Hanjuan , Liu Zhong , Zhang Yuhu , Pan Qiangyan , Guo Yingxiang , Chen Xinfeng , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang . Study of Low-lying Level Structure in ¹⁹⁸Pb. Chinese Physics C, 1994, 18(S1): 28-32.
[20]	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.

Access

Get Citation

LUO Wan-Ju, GUO Ying-Xiang, ZHOU Xiao-Hong, ZHANG Yu-Hu, LEI Xiang-Guo, LIU Zhong, HE Jian-Jun, ZHENG Yong, LIU Min-Liang, ZHU Li-Hua and WEN Shu-Xian. Experimental Study of Level Structure in ²⁰⁷Rn[J]. Chinese Physics C, 2003, 27(5): 402-405.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2002-06-13
Revised: 1900-01-01

Article Metric

Article Views(3047)
PDF Downloads(624)
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

Experimental Study of Level Structure in ²⁰⁷Rn

Corresponding author: LUO Wan-Ju,

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China2 China Institute of Atomic Energy,Beijing 102413,China

Received Date: 2002-06-13

Accepted Date: 1900-01-01

Available Online: 2003-05-05

Abstract: High spin states of ²⁰⁷Rn have been investigated via the ¹⁹⁶Pt(¹⁶O,5n)²⁰⁷Rn reaction at ¹⁶O energies from 85 to 95 MeV using techniques of in beam γ-ray spectroscopy. The measurements of γ-ray excitation fuction,γ-ray spectra,γ-γ-t coincidences and decay γ ray spectra were performed with 10 BGO(AC)HPGe detectors.Based on these measurements,a level scheme of ²⁰⁷Rn with 17 γ rays is established. The spins for most of the levels in the scheme are proposed according to the results of measured γ-ray DCO ratios. Comparing the structure between ²⁰⁸Rn and ²⁰⁷ Rn, the low lying levels in ²⁰⁷Rn are interpreted by coupling a valence neutron hole (f _5/2) to the excited states in ²⁰⁸Rn core.

HTML

Reference (1)

Experimental Study of Level Structure in ²⁰⁷Rn

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Experimental Study of Level Structure in ²⁰⁷Rn

Corresponding author: LUO Wan-Ju,

HTML

目录

Experimental Study of Level Structure in 207Rn

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Experimental Study of Level Structure in 207Rn

Corresponding author: LUO Wan-Ju,

HTML

目录

Experimental Study of Level Structure in ²⁰⁷Rn

Experimental Study of Level Structure in ²⁰⁷Rn