Reinvestigation for EC/β<SUP>+</SUP> Decay of Neutron-Deficient Nuclide <SUP>120</SUP>Ba

Xie Yuanxiang; Xu Shuwei; Li Zhankui; Ma Ruichang; Yu Yong

Chinese Physics C> 1999, Vol. 23> Issue(12) : 1129-1134

Reinvestigation for EC/β⁺ Decay of Neutron-Deficient Nuclide ¹²⁰Ba

Institute of Mordern Physics, ne Chinese Academy of Science,Lanzhou 730000

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Abstract：
¹²⁰Ba was produced by irradiation of ⁹²Mo with 171MeV ³²S via fusion-evaporahon reaction channel. The reaction preducts were camed to a low-background region using a He-jet recoil fast tape transport system. Two planar High-Purity Germanitim detectors were put at oppsite sides of the tape so as to make a coincidence measurements. Based on the data analysis, the previously Published γ rays in ¹²⁰Ba decay were proved and other nineteen y rays with weaker intensity and lowerenergy were also assigned to ¹²⁰Ba decay. A new decay scheme of ¹²⁰Ba was proposed.It includes 35 γ rays and 25 energy levels.

References

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Janas L Peochocki A, Szerypo J et al. Nucl. Phys., 1997, A627: 1192 Xu Shuwei, Guo Junsheng, Yuan Shuanggul et al. Phys. Rev., 1992, C46:510 3 Akihiko Osa, Shin–ichi ICHIKAWA Hideki IIMURA et al.JAERI Annual Rep.,1991, 95 4 Weiss B, Gizon A, Liang C F et al. Low–Spin States in 122Cs. In: Rita G. Lerner.Nuclei Far From Stability CONF Rosseau take 1987. New York: American Institute of Physics, 1988. 415 5 Gove N B, Martin M J. Nucl.Data Tables, 1971, 10:2066 Roman S, Gove N B. Phys. Rev., 1973, C7: 1995

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Xie Yuanxiang, Xu Shuwei, Li Zhankui, Ma Ruichang and Yu Yong. Reinvestigation for EC/β⁺ Decay of Neutron-Deficient Nuclide ¹²⁰Ba[J]. Chinese Physics C, 1999, 23(12): 1129-1134.

Xie Yuanxiang, Xu Shuwei, Li Zhankui, Ma Ruichang and Yu Yong. Reinvestigation for EC/β⁺ Decay of Neutron-Deficient Nuclide ¹²⁰Ba[J]. Chinese Physics C, 1999, 23(12): 1129-1134. shu

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Received: 1998-09-21
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Reinvestigation for EC/β⁺ Decay of Neutron-Deficient Nuclide ¹²⁰Ba

Corresponding author: Xie Yuanxiang,

Institute of Mordern Physics, ne Chinese Academy of Science,Lanzhou 730000

Received Date: 1998-09-21
Accepted Date: 1900-01-01
Available Online: 1999-12-05

Abstract: ¹²⁰Ba was produced by irradiation of ⁹²Mo with 171MeV ³²S via fusion-evaporahon reaction channel. The reaction preducts were camed to a low-background region using a He-jet recoil fast tape transport system. Two planar High-Purity Germanitim detectors were put at oppsite sides of the tape so as to make a coincidence measurements. Based on the data analysis, the previously Published γ rays in ¹²⁰Ba decay were proved and other nineteen y rays with weaker intensity and lowerenergy were also assigned to ¹²⁰Ba decay. A new decay scheme of ¹²⁰Ba was proposed.It includes 35 γ rays and 25 energy levels.