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

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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.

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[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

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[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.
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[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.

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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.

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

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通讯作者: 陈斌, [email protected]

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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.

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

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

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