In-beam γ-Ray Spectroscopy of Level Structure in <SUP>134</SUP>Ba

LUO Peng<SUP>1; 2</SUP>; LIU Min-Liang<SUP>1; LIU Zhong<SUP>1</SUP>; ZHANG Yu-Hu<SUP>1</SUP>; ZHOU Xiao-Hong<SUP>1</SUP>; GUO Ying-Xiang<SUP>1</SUP>; MA Ying-Jun<SUP>3</SUP>; Y.Sasaki<SUP>4</SUP>; K.Yamada<SUP>4</SUP>; H.Ohshima<SUP>4</SUP>; S.Yokose<SUP>4</SUP>; M.Ishizuka<SUP>4</SUP>; T.Komatsubara&lt;sup

Chinese Physics C> 2004, Vol. 28> Issue(3) : 268-273

In-beam γ-Ray Spectroscopy of Level Structure in ¹³⁴Ba

Institute of Modern Physics,The Chinese Academy of Science,Lanzhou 730000,China2 Graduate School of The Chinese Academy of Sciences,Beijing 100039,China3 Jilin University,Changchun 130012,China4 Institute of Physics and Tandem Accelerator Center,University of Tsukuba,Ibaraki 305-006,Japan

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Excited states of ¹³⁴Ba, populated up to medium and high spins via the heavy-ion induced ¹²⁸Te(¹⁰B,1p3n)¹³⁴Ba reaction at 46 MeV beam energy, have been studied using in-beam γ-ray spectroscopy techniques. Nine anti-Compton HPGe detectors were employed for the measurements of γ-γ-t coincidences. Based on the results of the γ-γ coincidence relationships, relative intensities and ADO ratios, a level scheme of ¹³⁴Ba has been established. Comparing with the systemic features of the negative bands of N=78 isotones, the 11^－ state at the excitation energy of 4142keV, is analogous to the one in ¹³⁶Ce.

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LUO Peng^{1, 2}, LIU Min-Liang^{1, LIU Zhong¹, ZHANG Yu-Hu¹, ZHOU Xiao-Hong¹, GUO Ying-Xiang¹, MA Ying-Jun³, Y.Sasaki⁴, K.Yamada⁴, H.Ohshima⁴, S.Yokose⁴, M.Ishizuka⁴ and T.Komatsubara<sup. In-beam γ-Ray Spectroscopy of Level Structure in ¹³⁴Ba[J]. Chinese Physics C, 2004, 28(3): 268-273.}

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Received: 2003-07-30
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

In-beam γ-Ray Spectroscopy of Level Structure in ¹³⁴Ba

Corresponding author: LIU Zhong¹,

Institute of Modern Physics,The Chinese Academy of Science,Lanzhou 730000,China2 Graduate School of The Chinese Academy of Sciences,Beijing 100039,China3 Jilin University,Changchun 130012,China4 Institute of Physics and Tandem Accelerator Center,University of Tsukuba,Ibaraki 305-006,Japan

Received Date: 2003-07-30

Accepted Date: 1900-01-01

Available Online: 2004-03-05

Abstract: Excited states of ¹³⁴Ba, populated up to medium and high spins via the heavy-ion induced ¹²⁸Te(¹⁰B,1p3n)¹³⁴Ba reaction at 46 MeV beam energy, have been studied using in-beam γ-ray spectroscopy techniques. Nine anti-Compton HPGe detectors were employed for the measurements of γ-γ-t coincidences. Based on the results of the γ-γ coincidence relationships, relative intensities and ADO ratios, a level scheme of ¹³⁴Ba has been established. Comparing with the systemic features of the negative bands of N=78 isotones, the 11^－ state at the excitation energy of 4142keV, is analogous to the one in ¹³⁶Ce.

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In-beam γ-Ray Spectroscopy of Level Structure in ¹³⁴Ba

In-beam γ-Ray Spectroscopy of Level Structure in ¹³⁴Ba

Corresponding author: LIU Zhong¹,