Investigation of the 2vEC/EC Decay of 106Cd

被引:5
作者
Rukhadze N.I. [1 ]
Beneš P. [2 ]
Briančon Ch. [3 ]
Brudanin V.B. [1 ]
Vylov Ts. [1 ]
Gusev K.N. [1 ]
Egorov V.G. [1 ]
Klimenko A.A. [1 ]
Kovalenko V.E. [1 ]
Kovalik A. [1 ]
Salamatin A.V. [1 ]
Timkin V.V. [1 ]
Čermák P. [2 ]
Štekl I. [2 ]
机构
[1] Joint Institute for Nuclear Research
[2] Institute of Experimental and Applied Physics, CTU
[3] Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
基金
俄罗斯基础研究基金会;
关键词
Daughter Nucleus; Detector Part; Total Measurement Time; Near Detector; Double Coincidence;
D O I
10.3103/S1062873808060038
中图分类号
学科分类号
摘要
Search for the β+β+, β+ EC, and EC/EC modes of the 106Cd decay was carried out with the TGV-2 (Telescope Germanium Vertical) low-background multidetector spectrometer installed at the Modane underground laboratory (4800 m w.e.). The measured foil samples ∼50 Um thick and 52 mm in diameter were placed between the entrance windows of the neighboring detectors inside the cryostat. The total measurement time for 10 g of 106Cd enriched to 75% was 8687 h. New limits (at the 90% confidence level, CL) were obtained for the 106Cd half-lives against various branches of the decay to the ground state 0+ and excited states 2+ of the 106Pd daughter nucleus. They are T1/2(2vββ+ β+) ≥6.0×1019 y, and T1/2 (2vβ+EC) ≥5.9 × 1019 y, and T1/2(2v EC/EC ) ≥ 3.0 × 1020 y for the transitions to the 0+ ground state of 106Pd; T1/2 (2vβ+β+) ≥ 5.7 × 1019 y, T1/2(2vβ+ EC) ≥5.9 × 1019 y, and T1/2(2v EC/EC) ≥ 4.2 × 1019 y for the transitions to the 2+, 512-keV excited state of 106Pd; and T 1/2(2v EC/EC) ≥ 3.1 × 1019 y for the transition to the 01 +, 1334-keV excited state of 106Pd. © Allerton Press, Inc. 2008.
引用
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页码:731 / 734
页数:3
相关论文
共 12 条
  • [1] Haxton W.C., Stephenson G.J., Prog. Part. Nucl. Phys., 12, (1984)
  • [2] Tretyak V.I., Zdesenko Yu.G., At. Data Nucl. Data Tables, 80, (2002)
  • [3] Barabash A., Et al., Nucl. Phys. A, 604, (1996)
  • [4] Belli P., Et al., Astropart. Phys., 10, (1999)
  • [5] Norman E.B., De Faccio M.A., Phys. Lett. B, 148, (1984)
  • [6] Georgadze A.Sh., Et al., Phys. At. Nucl., 58, (1995)
  • [7] Danevich F.A., Et al., Phys. Rev. C: Nucl. Phys., 68, (2003)
  • [8] Kiel H., Et al., Nucl. Phys. A, 723, (2003)
  • [9] Brudanin V.B., Et al., Phys. Lett. B, 495, (2000)
  • [10] Brudanin V.B., Et al., Izv. Ross. Akad. Nauk, Ser. Fiz., 67, 5, (2003)