Measurement of β<SUP>+</SUP> Delayed α Decay of <SUP>20</SUP>Na

WANG Hong-Wei; WU He-Yu; JIN Gen-Ming; ZHANG Bao-Guo; XIAO Zhi-Gang; DUAN Li-Min; WEI Zhi-Yong; LI Zu-Yu; LU Zhao-Hui; LIU Yong-Ying; CHEN Ke-Liang; HU Rong-Jiang; ZHU Hai-Dong; CEN Ling; WANG Su-Fang; LI Xiang-Qing; CHEN Tao; HUA Hui

Chinese Physics C> 2001, Vol. 25> Issue(8) : 731-735

Measurement of β⁺ Delayed α Decay of ²⁰Na

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China1 Department of Technical Physics,Peking University,Beijing 100871,China

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Abstract：
Through the ²⁰Na β⁺ ²⁰Ne→¹⁶O+α process,the half-life and β⁺ delayed α decay spectrum of ²⁰Na have been measured on the Radioactive Ion Beam Line in Lanzhou(RIBLL). The ²⁰Na was identified through TOF-ΔE method and alpha particle was measured by four Si(Au) surface barrier detectors. The half life of ²⁰ Na is(459±7)ms. Result shows that in addition to nine high excitation energy levels with E_d≥2.688MeV, three low excitation energy levels of ²⁰Na with E_d=0.890 & 1.054,1.991,2.424 & 2.457MeV were observed in the experiment. The relative intensity for 1.991MeV level, a more important energy level in the center of mass system energy region from 1.6 to 2.5MeV obtained in this experiment is much higher than the existed one. We also obtained the relative intensities of the levels of E_d=0.890 & 1.054,2.424 & 2.457MeV.

References

[1]

. DING Da-Zhao,CHEN Yong-Shou,ZHANG Huan-Qiao.Progress of Nuclear Physics,Shanghai:Scientific Technical Publishers,1997,383—466(in Chinese)(丁大钊,陈永寿,张焕乔.原子核物理进展,上海:科学技术出版社,1997,383—466)2. WU He-Yu.Nuclear Physics Rivew,1999,16(3):137—144(in Chinese)(吴和宇.原子核物理评论,1999,16(3):137—144)3. Macfarlane R D,Siivola A.Nucl.Phys.,1964,59:168—1764. Pearson J D,Almqvist E et al.Can.J.Phys.,1964,42:489—4935. Polichar R M,Steigerwalt J E et al.Phys.Rev.,1967,163:1084—10906. Torgerson D F,Wien K et al.Phys.Rev.,1973,C8:161—1677. Clifford E T H,Hagberg E et al.Nucl.Phys.,1989,A493:293—3228. Angulo C,Arnould M et al.Nucl.Phys.,1999,A656:3—1839. ZHAN Wen-Long,GUO Zhong-Yan,LIU Guan-Hua et al.Science in China,1999,A20:77—84(in Chinese)(詹文龙,郭忠言,刘冠华等.中国科学,1999,A20:77—84)10. Ajzenberg-Selove F.Nucl.Phys.,1987,A475:1—19811. Hahn K H,Chang K H et al.Phys.Rev.,1987,C36:892—898

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[12]	Xie Yuanxiang , Xu Shuwei , Li Zhankui , Ma Ruichang , Ge Yuanxiu , Wang Chunfang , Huang Wenxue , Zhang Tianmei . Synthesis and Study of the New β-delayed Proton Precursor Ce in the Region of Proton-drip Line. Chinese Physics C, 1997, 21(7): 668-671.
[13]	Kong Xiangzhong , Wang Yongchang , Yang Jingkang , Yuan Junqian . The Cross Section Measurements for the Ba(n, x)¹³⁴Cs,¹³⁴Ba(n, 2n)¹³³Ba,¹⁴⁰Ce(n, 2n)¹³⁹Ce,¹⁴²Ce(n,2n)¹⁴¹Ce and ²³Na(n,2n)²²Na Reactions. Chinese Physics C, 1995, 19(9): 781-785.
[14]	Xu Xiaoji , Hu Zhiqiang , Guo Junsheng , Ma Ruichang , Liu Hongye , Luo Yixiao , Zhang Yuzhao , Guo Tianrui , Huang Wenxue , Xu Lianlian . New Results of β-delayed α Decay of ²⁰Na. Chinese Physics C, 1994, 18(8): 680-686.
[15]	ZHU Quan-Ling , GE Ling-Xiao . Peripheral Collisions of ²⁰Ne+²⁰Ne at 25MeV/A. Chinese Physics C, 1993, 17(7): 658-664.
[16]	XIE Yuan-Xiang , HU Xiao-Qing . Investigation of the α particles in the Reaction of 294MeV ²⁰Ne+¹⁵⁹Tb. Chinese Physics C, 1993, 17(3): 283-288.
[17]	XU Xiao-Ji , GUO Jun-Sheng , HU Zhi-Qiang , ZHOU Xiao-Hong , MA Rui-Chang , LIU Hong-Ye , LI Gui-Sheng , DU Yi-Fei . A New Decay Channel Discovered in β-Delayed α Decay of ²⁰Na. Chinese Physics C, 1993, 17(7): 577-581.
[18]	HU Xiao-Qing , ZHU Yong-Tai , SHEN Wen-Qing , LI Song-Lin , ZHAN Wen-Long , XI Hong-Fei , ZHU Xiang , ZHANG Zhen . Study on the Correlation between Projectile-Like Fragments And α-Particles in ²⁰Ne (14.7,19.2MeV/u)+⁵⁸Ni Reactions. Chinese Physics C, 1992, 16(3): 250-255.
[19]	ZHANG Li . A Possible Island of Beta-Delayed Neutron Precursors in Heavy Nucleus Region. Chinese Physics C, 1991, 15(2): 187-190.
[20]	CHENG YE-HAO , GONG KUN , ZHU GUANG-HUA , YANG JIN-GANG , DING XUN-LIANG , CHEN RUI-GUANG , JIANG CHENG-LIE . THE STUDY OF SOME NON-SOLATED RESONANCES FOR THE ²³Na （p,α）²⁰Ne REACTION. Chinese Physics C, 1979, 3(5): 624-638.

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WANG Hong-Wei, WU He-Yu, JIN Gen-Ming, ZHANG Bao-Guo, XIAO Zhi-Gang, DUAN Li-Min, WEI Zhi-Yong, LI Zu-Yu, LU Zhao-Hui, LIU Yong-Ying, CHEN Ke-Liang, HU Rong-Jiang, ZHU Hai-Dong, CEN Ling, WANG Su-Fang, LI Xiang-Qing, CHEN Tao and HUA Hui. Measurement of β⁺ Delayed α Decay of ²⁰Na[J]. Chinese Physics C, 2001, 25(8): 731-735.

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Received: 2000-08-24
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Measurement of β⁺ Delayed α Decay of ²⁰Na

Corresponding author: WANG Hong-Wei,

Institute of Modern Physics,The Chinese Academy of Sciences,Lanzhou 730000,China1 Department of Technical Physics,Peking University,Beijing 100871,China

Received Date: 2000-08-24

Accepted Date: 1900-01-01

Available Online: 2001-08-05

Abstract: Through the ²⁰Na β⁺ ²⁰Ne→¹⁶O+α process,the half-life and β⁺ delayed α decay spectrum of ²⁰Na have been measured on the Radioactive Ion Beam Line in Lanzhou(RIBLL). The ²⁰Na was identified through TOF-ΔE method and alpha particle was measured by four Si(Au) surface barrier detectors. The half life of ²⁰ Na is(459±7)ms. Result shows that in addition to nine high excitation energy levels with E_d≥2.688MeV, three low excitation energy levels of ²⁰Na with E_d=0.890 & 1.054,1.991,2.424 & 2.457MeV were observed in the experiment. The relative intensity for 1.991MeV level, a more important energy level in the center of mass system energy region from 1.6 to 2.5MeV obtained in this experiment is much higher than the existed one. We also obtained the relative intensities of the levels of E_d=0.890 & 1.054,2.424 & 2.457MeV.

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Measurement of β⁺ Delayed α Decay of ²⁰Na

Measurement of β⁺ Delayed α Decay of ²⁰Na