First Study of EC/β+ Decay Schemes for Neutron-Deficient Isotopes 153Er and 157Yb

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

Chinese Physics C> 1995, Vol. 19> Issue(3) : 193-202

First Study of EC/β⁺ Decay Schemes for Neutron-Deficient Isotopes ¹⁵³Er and ¹⁵⁷Yb

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, 7300001 Department of Modern Physics, Lanzhou University, Lanzhou 730000

Abstract
HTML
Reference
Related

PDF

Abstract：
¹⁵³Er and ¹⁵⁷Yb were produced via xu fusion-evaporation reaction by irradiation of ¹⁴²Nd and ¹⁴⁷Sm with ¹⁶O, respectively. A He-jet recoil tape transport system, X-γ and γ-γ coincidence measurements were employed to separate and identify the reaction products and to study the EC/β⁺ decay of ¹⁵³Er and ¹⁵⁷Yb. The EC/β⁺ decay schemes of ¹⁵³Er and ¹⁵⁷Yb have been proposed for the first time, from which a new three qussi-particle state and two new single proton states have been assigned to ¹⁵³Ho, and a new isomer and a new rotational band have been assigned to ¹⁵⁷Tm. According to systematic behaviour of the low-laying energy levels for odd holmium and odd thulium isotopes with N=82-102, it can be seen that the change from spherical to deformed shapes of nuclear ground states in the two isotope chains appears between N=86 and 88.

References

[1]

J.D.Bowman,R.E.EPPley,E.K.Hyde,Phys.Rev.,C25（1982）941.[2]E.Hagberg,P.G.Hansen,J.C.Hardy et al.,Nucl.Phys.,A293（1977）1.[3]M.A.Lee,Nucl.Data.Sheets,60（1990）513.[4]R.Neugart et al.,5thInt.Conf.on Nuclei far from Stability,Rosseau Lake,Canada,p.126（1988）.[5]M.A.Lee,Nucl.Data Sheets,60（1990）509.[6]M.H.Rafailovich,O.C.Kistner,A.W.Sunyar et al.,Phys.Rev.,C30（1984）169.[7]C.Ekstrom,L.Robertsson et al.,Z.Phys.,A316（1984）239.[8]G.Andi,A.H.Wapstra,Nucl.Phys.,A565（1993）1.[9]R.Kossakowski,J.Jastzebski,P.Rymuza et al.,Phys.Rev.,C32（1985）1612.[10]M.A.RILEY,C.Baktash,Y.A.Ellis-Akovali et al.,Argonne National Laboratory Report,ANL-PHY-88-2,1988.[11]K.S.Toth,C.R.Bingham,W.D.Schmidt-ott,Phys.Rev.,C10（1974）1550.[12]L.Kh.Batist et al.,Izv.Akad.Nauk SSSR Ser.Fiz.,46（1982）2200.[13]袁双贵、徐树威、张学谦等，核技术，16（8）（1993）475.[14]徐树威、王以好、罗亦孝等，He-jet带传输及X-γ（t）符合测量装置和153Er（EC+β+）衰变新γ的测定，核技术，（1995）待发表。[15]XuShuwei,XieYuanxiang,PanQiangyan et al.,The（EC+β+）decay of 153Er,Z.Phys.,A350（1994）187.[16]XuShuwei,XieYuanxiang,PanQiangyan et al.,（EC+β+）decay of 157Yb,Phys.Rev.,C50,No6（1994）.[17]N.B.Gove,M.J.Martin,Nucl.Data Tables,10（1971）206.[18]R.B.Firestone,J.M.Nitchke,P.A.Wilmarth et al.,Phys.Rev.,C39（1989）219.[19]K.S.Tothetal.,Phys.Rev.,C44（1991）1868.[20]R.Barden,A.Plochocki,D.Schardt et al.,Z.Phys.,A329（1988）11.[21]W.Meczynski,K.Zuber,R.Broda et al.,Programme and Abstracts of 6th Int.Conf.on Nucl.far from Stability,PE34（1992）[22]P.C.Sood and R.K.Sheline,Atomic Data and Nucl ear Data Tables,43（1989）259.[23]K.S.Toth et al.,Phys.Rev.,C32（1985）342.[24]G.D.Alkhazov,A.E.Barzakh,I.Ya.Chubukov et al.,Nucl.Phys.,A477（1988）37.[25]A.K.Jain,R.K.Sheline,P.C.Sood et al.,Rev.Mod.Phys,62（1990）393.[26]P.Kleibeinz,B.Rubio,M.Oyawa et al.,Z.Phys.,A322（1985）705.[27]M.O.Kortelahtic,K.S.Toth,K.S.Vierinen et al.,Phys.Rev.,C39（1989）636.[28]A.V.Potempa et al.,Izv.Akad.Nauk.SSSR Ser.Fiz.,54（1990）852.

[1]	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.
[2]	GAN Zai-Guo , FAN Hong-Mei , QIN Zhi , WU Xiao-Lei , GUO Jun-Sheng , LEI Xiang-Guo , DONG Cheng-Fu , XU Hua-Gen , CHEN Ruo-Fu , ZHANG Fu-Ming , GUO Bin , LIU Hong-Ye , WANG Hua-Lei , , , . First Observation for Isotope ²⁶⁵Bh(Z=107). Chinese Physics C, 2004, 28(4): 332-334.
[3]	ZHOU Xian-Rong , LONG Gui-Lu , LI Yan-Song . Beta Decay in ¹⁷⁶Yb. Chinese Physics C, 2004, 28(S1): 69-71.
[4]	ZHOU Xiao-Hong , ZHENG Yong , ZHANG Yu-Hu , GUO Ying-Xiang , LEI Xiang-Guo , LIU Zhong , HE Jian-Jun , LIU Min-Liang , LUO Wan-Ju , WEN Shu-Xian , ZHU Li-Hua , YANG Chun-Xiang . Shape Co-existence in ¹⁵⁷Yb. Chinese Physics C, 2002, 26(5): 441-444.
[5]	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.
[6]	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.
[7]	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.
[8]	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.
[9]	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.
[10]	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.
[11]	Zhong Jiquan , Zhang Xueqian . Non-axial Parameter γ Effects on Even-Even Er Isotopes. Chinese Physics C, 1997, 21(2): 176-179.
[12]	Xie Yuanxiang , Xu Shuwei , Guo Yingxiang , Ma Ruichang , Ge Yuanxiu , Li Zhankui , Wang Chunfang , Guo Bin , Xing Jianping , Zhang Tianmei , Zhu Shaofei , Xu Wang . First Study of Weak (EC+β⁺) Decay Branch for the Neutron-Deficient Isotoep ²⁰⁹Fr. Chinese Physics C, 1997, 21(4): 289-291.
[13]	Guo Junsheng , Gan Zaiguo , Liu Hongye , Shi Lijun , Yang Weifan , Mou Wantong , Guo Tianrui , Fang Keming , Shen Shuifa , Yuan Shuanggui , Zhong Jiquan , Zhang Xueqian , Qin Zhi , Ma Ruichang , Wang Shuhong , Kong Dengming , Qiao Jimin . Synthesis and Identification of the New Transuranium Neutron-deficient Isotope ²³⁵Am. Chinese Physics C, 1996, 20(3): 286-288.
[14]	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.
[15]	Yang Weifan , Yuan Shuanggui , Zhang Xueqian , Yu Xian , Mou Wantong , Li Zongwei , Gan Zaiguo , Liu Hongye , Guo Junsheng , Zhong Jiquan , Sun Xiangfu . The Synthesis and γ Decay of New Heavy Neutron-Rich Nuclide ¹⁷⁵Er. Chinese Physics C, 1995, 19(10): 959-960.
[16]	Sang Jianping , Liu Yong . Microscopic Investigation of High-Spin States for Even-Even Nuclei (Part 2): Application to isotones ¹⁵⁴Dy, ¹⁵⁶Er and ¹⁵⁸Yb. Chinese Physics C, 1994, 18(S4): 407-414.
[17]	Sang Jianping , Liu Yong . Microscopic Investigation of High-Spin States for Even-Even Nuclei(Ⅱ) Application to isotones ¹⁵⁴Dy,¹⁵⁶Er and ¹⁵⁸Yb. Chinese Physics C, 1994, 18(11): 1020-1026.
[18]	YANG Weifan , ZHAO Zhizheng , LI Zongwei , MOU Wantong , ZHU Shaofei , XIE Xiujun , YUAN Suanggui , ZHANG Tianmei , PAN Qiangyan , WANG Jicheng , XU Shuwei . New Gamma Rays from the Neutron-Rich Isotope ¹⁸⁹W Decay. Chinese Physics C, 1993, 17(11): 1055-1056.
[19]	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.
[20]	Zhang Jing-ye , Zhang Xi-zhen . ON THE MECHANISM OF BACKBENDING IN NUCLEI ^162,164Er, ^164,166Yb, AND ¹⁶⁸Hf. Chinese Physics C, 1980, 4(6): 784-787.

Access

Get Citation

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 and Chen Xingqu. First Study of EC/β⁺ Decay Schemes for Neutron-Deficient Isotopes ¹⁵³Er and ¹⁵⁷Yb[J]. Chinese Physics C, 1995, 19(3): 193-202.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(2629)
PDF Downloads(585)
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 EC/β⁺ Decay Schemes for Neutron-Deficient Isotopes ¹⁵³Er and ¹⁵⁷Yb

Corresponding author: Xu Shuwei,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou, 7300001 Department of Modern Physics, Lanzhou University, Lanzhou 730000

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1995-03-05

Abstract: ¹⁵³Er and ¹⁵⁷Yb were produced via xu fusion-evaporation reaction by irradiation of ¹⁴²Nd and ¹⁴⁷Sm with ¹⁶O, respectively. A He-jet recoil tape transport system, X-γ and γ-γ coincidence measurements were employed to separate and identify the reaction products and to study the EC/β⁺ decay of ¹⁵³Er and ¹⁵⁷Yb. The EC/β⁺ decay schemes of ¹⁵³Er and ¹⁵⁷Yb have been proposed for the first time, from which a new three qussi-particle state and two new single proton states have been assigned to ¹⁵³Ho, and a new isomer and a new rotational band have been assigned to ¹⁵⁷Tm. According to systematic behaviour of the low-laying energy levels for odd holmium and odd thulium isotopes with N=82-102, it can be seen that the change from spherical to deformed shapes of nuclear ground states in the two isotope chains appears between N=86 and 88.

HTML

Reference (1)

First Study of EC/β⁺ Decay Schemes for Neutron-Deficient Isotopes ¹⁵³Er and ¹⁵⁷Yb

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

First Study of EC/β⁺ Decay Schemes for Neutron-Deficient Isotopes ¹⁵³Er and ¹⁵⁷Yb

Corresponding author: Xu Shuwei,

HTML

目录