β-Delayed Proton Decays of 140Tb and 141Dy as Well as the Spin and Parity of 143Dy

XU Shu-Wei; XIE Yuan-Xiang; XING Ye-Bing; XU Fu-Rong; LIU Hong-Liang; LI Zhan-Kui

Chinese Physics C> 2006, Vol. 30> Issue(6) : 526-529

β-Delayed Proton Decays of ¹⁴⁰Tb and ¹⁴¹Dy as Well as the Spin and Parity of ¹⁴³Dy

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Technical Physics, Peking University, Beijing 100871, China

Abstract
HTML
Reference
Related

PDF

Abstract：
¹⁴⁰Tb and ¹⁴¹Dy were produced via fusion evaporation in the reaction ⁴⁰Ca+¹⁰⁶Cd. Their β-delayed proton decays were studied by means of “p-γ” coincidence in combination with a He-jet tape transport system, including half-lives, proton energy spectra, γ-transitions following the proton emissions, and the branching ratios to the low-lying states in the grand-daughter nuclei. The ground-state spins and parities of 140Tb and 141Dy were extracted as 7^± and 9/2^±, respectively, by fitting the experimental data with a statistical model calculation. The configuration-constrained nuclear potential energy surfaces (NPES) of ¹⁴⁰Tb and ¹⁴¹Dy were calculated by using the Woods-Saxon Strutinsky method, which indicate the ground-state spins and parities of ¹⁴⁰Tb and ¹⁴¹Dy to be 7⁺and 9/2^－, respectively. In addition, the configuration-constrained NPES of ¹⁴³Dy was also calculated by using the same method. From the NPES a 1/2⁺ ground state and a 11/2^－ isomer with the excitation energy of 198keV were found. The calculated results are consistent with our experimental data on the decay of ¹⁴³Dy reported in Eur. Phys. J., 2003, A16: 347—351.

References

[1]

. Wilmarth P A, Nitschke J M, Firestone R B et al. Z. Phys.,1986, A325: 485—4862. Gilat J, Nitschke J M, Wilmarth P A et al. Phys. Rev.,1989, C40: 2249—22593. Firestone R B, Gilat J, Nitschke J M et al. Phys. Rev.,1991, C43: 1066—10854. XU S W, XIE Y X, YU Y et al. Eur. Phys. J., 2000, A8:437—4395. XU S W, XIE Y X, LI Z K et al. Phys. Rev., 1999, C60:061302(R)6. XU S W, XIE Y X, LI Z K et al. Z. Phys., 1996, A356:227—2297. LI Z K, XU S W, XIE Y X et al. Phys. Rev., 1997, C56:1157—11598. Burrows T W. Nucl. Data Sheets, 2001, 92: 759—7679. Peker L K. Nucl. Data Sheets, 1994, 73: 261—35010. Hornshoj P,Wilsky K, Hansen P G et al. Nucl. Phys., 1972,A187: 609—62311. Takahashi K, Yamada M, Kondoh T. At. Data Nucl. DataTables, 1973, 12: 101—14212. Nazarewicz W, Dudek J, Bengtsson R et al. Nucl. Phys.,1985, A435: 397—44713. Audi G, Bersillon O, Blachot J et al. Nucl. Phys., 1997,A624: 1—12414. Tuli J K. Nucl. Data Sheets, 2001, 94: 771—77715. XU S W, XIE Y X, LI Z K et al. Eur. Phys. J., 2003, A16:347—351

[1]	CHENG Ming-Jian , LIU Lang , ZHANG Yi-Xin . Particle-number fluctuation of pairing correlations for Dy isotopes. Chinese Physics C, 2015, 39(10): 104102. doi: 10.1088/1674-1137/39/10/104102
[2]	XU Shu-Wei , XIE Yuan-Xiang , LI Zhan-Kui , XU Fu-Rong , LIU Hong-Liang . β-Delayed Proton Decays of ¹³³Sm and ¹⁴⁹Yb. Chinese Physics C, 2006, 30(11): 1067-1070.
[3]	XU Shu-Wei , LI Zhan-Kui , XIE Yuan-Xiang , GUO Wen-Tao . β-Delayed Proton Decays in the Rare-Earth Region Near Drip Line. Chinese Physics C, 2006, 30(S2): 131-135.
[4]	XU Shu-Wei , LI Zhang-Kui , XIE Yuan-Xiang , HUANG Wen-Xue , SHU Neng-Chuan , CHEN Yong-Shou , XU Fu-Rong , WANG Kun . β-Delayed Proton Decays Near the Proton Drip Line. Chinese Physics C, 2004, 28(S1): 1-4.
[5]	NI Shao-Yong , SHI Zhu-Yi , ZHAO Xing-Zhi , TONG Hong . Even Dy Isotopes in Relativistic Continuum Hartree-Bogoliubov Theory. Chinese Physics C, 2004, 28(S1): 108-112.
[6]	WANG Xu-Dong , XU Shu-Wei , LI Zhan-Kui , XIE Yuan-Xiang , WU Zhe-Ying , XU Fu-Rong , GUO Bin , LENG Chang-Geng , WANG Chun-Fang , YU Yong . β-Delayed Proton Decay of ⁹³Pd. Chinese Physics C, 2003, 27(4): 309-312.
[7]	YIN Min , ZHANG Wei-Ping , XU Mei , TAO Ye , Makhov V , Khaidukov N , Krupa J . VUV Spectra and Quantum Cutting of LiKGdF₅:Er,Dy Single Crystal. Chinese Physics C, 2003, 27(S1): 35-39.
[8]	HE Jian-Jun , ZHANG Yu-Hu , GUO Ying-Xiang , ZHOU Xiao-Hong , LEI Xiang-Guo , HUANG Wen-Xue , FENG Xi-Chen , ZHANG Shuang-Quan , XU Xiao , LIU Zhong , LUO Yi-Xiao , WEN Shu-Xian , WU Xiao-Guang , YUAN Guan-Jun . Investigation of High-Spin States in ¹⁴³Pm. Chinese Physics C, 2001, 25(9): 828-833.
[9]	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.
[10]	XU Shu-Wei , LI Zhan-Kui , XIE Yuan-Xiang , YU Yong , PAN Qiang-Yan , WANG Chun-Fang , XING Jian-Ping , MA Rui-Chang , CE Yuan-Xiu , WANG Xu-Dong . Nen β-Delayed Proton Decays in the Rare-Enrth Region Near the Proton Drip Line. Chinese Physics C, 2000, 24(S1): 73-80.
[11]	Xing Zheng , Chen Xingqu , Wang Xiaochun . ΔI=2 Energy Staggering in Superdeformed Bands in ¹⁴⁹Gd(b1) and ¹⁵³Dy(b1). Chinese Physics C, 1997, 21(11): 1041-1045.
[12]	Xing Zheng , Chen Xingqu , Wang Xiaochun . △I=2 Energy Staggering in Superdeformed Bands in ¹⁴⁹Gd(b1) and ¹⁵³Dy(b1). Chinese Physics C, 1997, 21(S4): 87-92.
[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]	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.
[15]	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.
[16]	Zhu Shengjiang , Ma Wenchao , Ahmad , B. Dichter , H. Emling , R. Holzman , R. V. F. Janssens , T. L. Khoo , M. Quader , P. J. Daly , Z. Grabowski , M. Piiparinen , W. Trzaska , M. W. Drigert , U. Garg . High Spin Level Structure in ¹⁵³Dy and Shape Changes in Neutron-Deficient Dy Nuclei. Chinese Physics C, 1991, 15(S2): 165-171.
[17]	YAN Wu-Guang . ON THE SENSITIVE AREA OF SPIN-PARITY ANALYSIS FOR J/ψ RADIATIVE DECAY PRODUCTS INTO TWO PSEUDOSCALARS. Chinese Physics C, 1990, 14(3): 193-199.
[18]	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.
[19]	ZHOU Zong-Yuan . HALF-LIFE MEASUREMENT OF THE β-DELAYED TWO-PROTON DECAY NUCLIDE ²⁶P. Chinese Physics C, 1988, 12(2): 246-251.
[20]	ZHANG Jing-Ye , ZHONG Ji-Quan , LIE Bao-An . ON THE DETERMINATION OF THE GROUND BAND PROPERTY IN ¹⁵²Dy. Chinese Physics C, 1984, 8(6): 761-764.

Access

Get Citation

XU Shu-Wei, XIE Yuan-Xiang, XING Ye-Bing, XU Fu-Rong, LIU Hong-Liang and LI Zhan-Kui. β-Delayed Proton Decays of ¹⁴⁰Tb and ¹⁴¹Dy as Well as the Spin and Parity of ¹⁴³Dy[J]. Chinese Physics C, 2006, 30(6): 526-529.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2005-11-18
Revised: 2006-01-10

Article Metric

Article Views(4085)
PDF Downloads(639)
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

β-Delayed Proton Decays of ¹⁴⁰Tb and ¹⁴¹Dy as Well as the Spin and Parity of ¹⁴³Dy

Corresponding author: XU Shu-Wei,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China2 Department of Technical Physics, Peking University, Beijing 100871, China

Received Date: 2005-11-18

Accepted Date: 2006-01-10

Available Online: 2006-06-05

Abstract: ¹⁴⁰Tb and ¹⁴¹Dy were produced via fusion evaporation in the reaction ⁴⁰Ca+¹⁰⁶Cd. Their β-delayed proton decays were studied by means of “p-γ” coincidence in combination with a He-jet tape transport system, including half-lives, proton energy spectra, γ-transitions following the proton emissions, and the branching ratios to the low-lying states in the grand-daughter nuclei. The ground-state spins and parities of 140Tb and 141Dy were extracted as 7^± and 9/2^±, respectively, by fitting the experimental data with a statistical model calculation. The configuration-constrained nuclear potential energy surfaces (NPES) of ¹⁴⁰Tb and ¹⁴¹Dy were calculated by using the Woods-Saxon Strutinsky method, which indicate the ground-state spins and parities of ¹⁴⁰Tb and ¹⁴¹Dy to be 7⁺and 9/2^－, respectively. In addition, the configuration-constrained NPES of ¹⁴³Dy was also calculated by using the same method. From the NPES a 1/2⁺ ground state and a 11/2^－ isomer with the excitation energy of 198keV were found. The calculated results are consistent with our experimental data on the decay of ¹⁴³Dy reported in Eur. Phys. J., 2003, A16: 347—351.

HTML

Reference (1)

β-Delayed Proton Decays of ¹⁴⁰Tb and ¹⁴¹Dy as Well as the Spin and Parity of ¹⁴³Dy

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

β-Delayed Proton Decays of ¹⁴⁰Tb and ¹⁴¹Dy as Well as the Spin and Parity of ¹⁴³Dy

Corresponding author: XU Shu-Wei,

HTML

目录