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Chinese Physics C> 2001, Vol. 25> Issue(2) : 108-114 

(EC/β+) Decay of 130Nd and 140Tb

  •  Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

  • Isotopes,130Nd and 140Tb were produced using enriched targets 96Ru and 106Cd, respectively,bombarded by 36Ar ion beam. The two nuclides were identified and studied by a He-jet tape transport system in combination with "X-γ" and "γ-γ" coincidence measure- ments. The half-life of 130Nd was determined to be (13±2)s. The EC/β+ decay scheme of 130Nd was proposed for the first time, and the spins and parties of the ground-state and observed low-lying states in the daughter nucleus 130Pr were speculated tentatively. The previous simple EC/β+ decay scheme of 140Tb was revised, and the spin-parity of its groundstate was assigned to be 7+.
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    [1] Petrache C M,Brant S,Barracco D et al. Nucl. Phys., 1996,A611:2472 Bogdanov P D,Demyanov A V,Kamauthe V A et al. Nucl. Phys.,1977,A275:229 3 Firestone R B,Gilat J,Nitschke J M et al. Phys. Rev., 1991,C43: 1066 4 Gizon A, Genevery J, Cata–Danil Gh et al. Z. Physics., 1997, A358: 3695 Audi G,Wapstra A H. Nucl. Phys., 1993,A565: 16 Sergeekov Yu V,Khazov Yu L,Burrows T W et al. Nuclear Date Sheets, 1994,72:6047 Tendow Y. Nuclear Data Sheets, 1996,77:7528 Rsel F, Fries H M,Alder K et al. At Data Nucl. Data Tables, 1978,21:919 Raman S,Gove N B. Phys. Rev.,1973,C7: 1995 10 Paul E S,Ahn K,Fossan D B et al. Phys. Rev., 1989,C39: 15311 Mller P, Nix J R,Kartz K–L et al. Atomic Data and Nuclear Data Tables, 1997, 66: 131; Firestone R B. In Table ofIsotope, 8th ed., Vol. II, edited by Shirley V S et al., New York, Wiley–Interscience, 1996, Appendices H,p–H7

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YU Yong, XIE Yuan-Xiang, XU Shu-Wei, LI Zhan-Kui, PAN Qiang-Yan, WANG Chun-Fang, XING Jian-Ping and ZHANG Tian-Mei. (EC/β+) Decay of 130Nd and 140Tb[J]. Chinese Physics C, 2001, 25(2): 108-114.
YU Yong, XIE Yuan-Xiang, XU Shu-Wei, LI Zhan-Kui, PAN Qiang-Yan, WANG Chun-Fang, XING Jian-Ping and ZHANG Tian-Mei. (EC/β+) Decay of 130Nd and 140Tb[J]. Chinese Physics C, 2001, 25(2): 108-114. shu
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Received: 2000-01-26
Revised: 1900-01-01
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(EC/β+) Decay of 130Nd and 140Tb

    Corresponding author: YU Yong,
  • Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China
  • Received Date: 2000-01-26
  • Accepted Date: 1900-01-01
  • Available Online: 2001-02-05

Abstract: Isotopes,130Nd and 140Tb were produced using enriched targets 96Ru and 106Cd, respectively,bombarded by 36Ar ion beam. The two nuclides were identified and studied by a He-jet tape transport system in combination with "X-γ" and "γ-γ" coincidence measure- ments. The half-life of 130Nd was determined to be (13±2)s. The EC/β+ decay scheme of 130Nd was proposed for the first time, and the spins and parties of the ground-state and observed low-lying states in the daughter nucleus 130Pr were speculated tentatively. The previous simple EC/β+ decay scheme of 140Tb was revised, and the spin-parity of its groundstate was assigned to be 7+.

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