First Study of Weak (EC+β<SUP>+</SUP>) Decay Branch for the Neutron-Deficient Isotoep <SUP>209</SUP>Fr

Xie Yuanxiang; Xu Shuwei; Guo Yingxiang; Ma Ruichang; Ge Yuanxiu; Li Zhankui; Wang Chunfang; Guo Bin; Xing Jianping; Zhang Tianmei; Zhu Shaofei; Xu Wang

Chinese Physics C> 1997, Vol. 21> Issue(4) : 289-291

First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr

Institute of Modern Physics,The Chinese Acadeny of Sciences,Lanzhou 730000

Abstract
HTML
Reference
Related

PDF

Abstract：
²⁰⁹Fr has been produced by irradiation of ¹⁹⁷Au with ¹⁶O from SFC accelarator uia the fusion-evaporation 4n channel.The(EC+β⁺)decay of ²⁰⁹Fr has been studied by a He-jet tape transport system.The decay scheme is proposed for the first time based on γ-t,X-γ-t,γ-γ-t coincidece and γ-γ delay coincidence measurements,which takes account of 20 observed γ ray.Five members of low-lying states in ²⁰⁹Rn can be explained by the multi-plet [(²¹⁰Rn2⁺)(νf_5/2)^－1].The branching ratio for(EC+β⁺) decay of ²⁰⁹Fr has been estimated experimentaly to be(3.0±1.5)%.

References

[1]

P.Hornshoj et al.,Nucl.Phys.,A 230（1974）380.[2]M.J.Martin,Nucl.Data Sheets,63（1991）723.[3]G.Audi A.H.Wapstra,Nucl.Phys.,A565（1993）1.[4]D.G.Raich et al,Z.Phys.,A279（1976）301.[5]A.R.Poletti et al.Nucl.Phys.,A440（1985）118.[6]V.G.Chumin et al.,Izv.Akad.Nauk SSSR Ser.Fiz.,45（1981）2102.[7]M.R.Schmorak,Nucl.Data Sheets,45（1985）145.[8]S.Baba et al.,Z.Phys.,A331（1988）33.[9]M.J.Martin,Nucl.Date Sheets,47（1986）950.

[1]	XU Shu-Wei , XIE Yuan-Xiang , LI Zhan-Kui , WANG Xu-Dong , PAN Qiang-Yan , YU Yong . EC/β⁺ decay of six medium-heavy nuclei. Chinese Physics C, 2009, 33(S1): 142-144. doi: 10.1088/1674-1137/33/S1/045
[2]	MA Hai-Liang , DONG Bao-Guo . Rotational Structures of Neutron Deficient Isotopes ^125,127,129Ce. Chinese Physics C, 2006, 30(S2): 81-83.
[3]	WANG Hua-Lei , ZHANG Yu-Hu , ZHOU Xiao-Hong , GUO Ying-Xiang , LEI Xiang-Guo , XU Shu-Wei , XIE Yuan-Xiang , XING Ye-Bing , ZHENG Yong , LIU Min-Liang , SONG Li-Tao , XIE Cheng-Ying , , . β⁺/EC Decay and Systematic Analysis of ^176,178Ir. Chinese Physics C, 2006, 30(S2): 177-179.
[4]	WANG Hua-Lei , ZHANG Yu-Hu , ZHOU Xiao-Hong , GUO Ying-Xiang , LEI Xiang-Guo , XIE Yuan-Xiang , XU Shu-Wei , XING Ye-Bing , ZHENG Yong , LIU Min-Liang , XIE Cheng-Ying , SONG Li-Tao , , , , . β⁺/EC-Decay Study of ¹⁷⁶Ir Neutron-Deficient Isotope. Chinese Physics C, 2006, 30(3): 201-206.
[5]	WANG Xu-Dong , XIE Yuan-Xiang , XU Shu-Wei , LI Zhan-Kui , GUO Bin , LENG Chang-Geng , WANG Chun-Fang , YU Yong . (EC+β⁺) Decay of ¹³³Sm and 1.1s Isomer of ¹³³Pr. Chinese Physics C, 2002, 26(8): 797-802.
[6]	ZHANG Bao-Guo , WANG Su-Fang , DUAN Li-Min , WEN Wan-Xin , JIN Gen-Ming , LI Zu-Yu , HE Zhi-Yong , WANG Hong-Wei , XIAO Zhi-Gang , ZHENG Ji-Wen , WU He-Yu , WEI Zhi-Yong . Investigation of Nuclear Deformation in Excited ²¹³Fr. Chinese Physics C, 2001, 25(7): 636-642.
[7]	YU Yong , XIE Yuan-Xiang , XU Shu-Wei , LI Zhan-Kui , PAN Qiang-Yan , WANG Chun-Fang , XING Jian-Ping , ZHANG Tian-Mei . (EC/β⁺) Decay of ¹³⁰Nd and ¹⁴⁰Tb. Chinese Physics C, 2001, 25(2): 108-114.
[8]	XIE Yuan-Xiang , XU Shu-Wei , LI Zhan-Kui , ZHANG Tian-Mei , MA Rui-Chang , GUO Ying-Xiang , GE Yuan-Xiu , WANG Chun-Fang , XING Jian-Ping . (EC/β⁺) Decay of Neutron Deficient Nuclide ¹²⁹Ce. Chinese Physics C, 2001, 25(3): 198-204.
[9]	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.
[10]	ZHANG Li , HU QingYuan , ZHAO JinHua , ZHENG JiWen , LI ZhanKui , LI ShiHong , GAN ZaiGuo , YU Yong , FAN HongMei , GUO Bin , ZHANG TianMei , WANG ChunFang , WANG TongQing , JIN GenMing , PU YueHu , , , , . γ Scheme Following ²⁰⁸Hg β^－ Decay. Chinese Physics C, 2000, 24(9): 823-828.
[11]	XIE YuanXiang , XU ShuWei , Li ZhanKui , YU Yong , PAN QiangYan , WANG ChunFang , ZHANG TianMei , LONG GuiLu , LI YanSong . (EC+β⁺) Decay of ¹³⁰Pm and ¹²⁸Pr. Chinese Physics C, 2000, 24(8): 719-724.
[12]	Xie Yuanxiang , Xu Shuwei , Li Zhankui , Ma Ruichang , Yu Yong . Reinvestigation for EC/β⁺ Decay of Neutron-Deficient Nuclide ¹²⁰Ba. Chinese Physics C, 1999, 23(12): 1129-1134.
[13]	Zhao Jinhua , Zhang Li , Zheng Jiwen , Wang Jicheng , Qin Zhi , Yang Yongfeng , Zhang Chun , Jin Genming , Guo Guanghui , Du Yifei , Guo Tianrui , Wang Tongqing , Guo Bin , Tan Jinfeng . New Heavy Neutron-Rich Nuclide ²⁰⁹Hg. Chinese Physics C, 1998, 22(10): 959-960.
[14]	Zhu Shengjiang , Wang Muge , Deng Jingkang . Level Schemes in Neutron-Rich ¹⁴¹Xe、¹⁵²Ce、¹⁵³Nd and ¹⁶⁰Sm Nuclei. Chinese Physics C, 1997, 21(2): 104-109.
[15]	Shen Shuifa , Yuan Shuanggui , Yang Weifan , Fang Keming , Mou Wantong , Zhang Zueqian , Li Zongwei , Zhong Jiquan , Guo Tianrui , Chen Zhantu . Decay Scheme of ²²⁹Ra. Chinese Physics C, 1997, 21(9): 783-786.
[16]	DIV align , Zhang Yuhu . Study of High Spin Isomer and its Decay Level Scheme of Doubly Odd ¹⁴⁴Pm Nucleus. Chinese Physics C, 1996, 20(5): 385-393.
[17]	Zhang Xueqian , Yuan Shuanggui , Yang Weifan , Mou Wantong , Yu Xian , Li Zongwei , Guo Tianrui , Du Yifei , Luo Yixiao . The Decay Scheme of ¹⁷⁵Er. Chinese Physics C, 1996, 20(8): 673-677.
[18]	Wang Jicheng , Zhao Jinhua , Guo Guanghui , Yang Yongfeng , Zhang Li . 4π△E_β Detector and Its Application to Researching Neutron-Rich Nuclides. Chinese Physics C, 1995, 19(7): 653-657.
[19]	Xu Shuwei , Xie Yuanxiang , Pan Qiangyan , Zhang Juping , Zhang Xueqian , Wang Yihao , Ge Yuanxiu , Yin Xijin , Wang Chunfang , Zhang Tianmei , Liu Zhong , Guo Bing , Luo Yixiao , Xing Zheng , Chen Xingqu . First Study of EC/β⁺ Decay Schemes for Neutron-Deficient Isotopes ¹⁵³Er and ¹⁵⁷Yb. Chinese Physics C, 1995, 19(3): 193-202.
[20]	GUO JUN-SHENG , SUN XI-JUN , XU XIAO-JI , WANG JUN , LIU HONG-YE . THE MEASUREMENT OF THE EXCITATION FUNCTIONS OF ISOTOPES OF Fr AND At, PRODUCED IN THE BOMBARDMENT OF ¹²C ON ²⁰⁹Bi. Chinese Physics C, 1978, 2(2): 143-150.

Access

Get Citation

Xie Yuanxiang, Xu Shuwei, Guo Yingxiang, Ma Ruichang, Ge Yuanxiu, Li Zhankui, Wang Chunfang, Guo Bin, Xing Jianping, Zhang Tianmei, Zhu Shaofei and Xu Wang. First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr[J]. Chinese Physics C, 1997, 21(4): 289-291.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1900-01-01
Revised: 1900-01-01

Article Metric

Article Views(2635)
PDF Downloads(576)
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

First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr

Corresponding author: Xie Yuanxiang,

Institute of Modern Physics,The Chinese Acadeny of Sciences,Lanzhou 730000

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1997-04-05

Abstract: ²⁰⁹Fr has been produced by irradiation of ¹⁹⁷Au with ¹⁶O from SFC accelarator uia the fusion-evaporation 4n channel.The(EC+β⁺)decay of ²⁰⁹Fr has been studied by a He-jet tape transport system.The decay scheme is proposed for the first time based on γ-t,X-γ-t,γ-γ-t coincidece and γ-γ delay coincidence measurements,which takes account of 20 observed γ ray.Five members of low-lying states in ²⁰⁹Rn can be explained by the multi-plet [(²¹⁰Rn2⁺)(νf_5/2)^－1].The branching ratio for(EC+β⁺) decay of ²⁰⁹Fr has been estimated experimentaly to be(3.0±1.5)%.

HTML

Reference (1)

First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr

Corresponding author: Xie Yuanxiang,

HTML

目录

First Study of Weak (EC+β+) Decay Branch for the Neutron-Deficient Isotoep 209Fr

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

First Study of Weak (EC+β+) Decay Branch for the Neutron-Deficient Isotoep 209Fr

Corresponding author: Xie Yuanxiang,

HTML

目录

First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr

First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr