MEASUREMENT OF ISOMERIC CROSS-SECTION RATIO IN <SUP>133</SUP>Cs(n,γ) <SUP>134</SUP>Cs REACTION

MA HUI-FANG; YANG ZHEN-GUO; GE LIN-XIAO

Chinese Physics C> 1982, Vol. 6> Issue(3) : 373-377

MEASUREMENT OF ISOMERIC CROSS-SECTION RATIO IN ¹³³Cs(n,γ) ¹³⁴Cs REACTION

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Abstract：
The isomeric absolute cross-section have been measured for the reaction ¹³³Cs (n,c) ¹³⁴ Cs at 14.8 MeV neutron energy.The results are:σ_n,γ^134mCs=1.76±0.14mb;σ_n,γ^134gCs=5.17±0.41mb;σ_n,γ^134+gCs=6.93±0.55mb.The isomeric cross-section ratio is σ^134m_Cs/σ^134gCs=0.34±0.03 The experimental results are in agreement with the values given by S.M. Qaim andcompared with the theoretical results calculated by Huizenga-Vandenbosch theory.From this, the spin cut-off paramenter σ and the number of γ-Cascades have been de-termined.

References

[1]

J. R. Huizeuga and R. Yandenbosch, Phys. Rev.,120(1960),1305; R. Yandenbosch and J. R. Huizenga, Phys. Rev., 120(1960), 1313.[2] J. Robb Grower, Phys. Rev., 123(1961), 267;J. Robb Grower, Phys. Rev., 127(1962), 2142.[3] G. R. Choppin and T. J. Klingen, Phys. Rev., 130(1963), 1990.[4] T. Mavaddat, S. A. Rao and P. K. Kuroda, J. Inorg. Nucl, Chem, 36(1974), 957[5] S. M. Qaim, J. Inorg. Nucl. Chem., 32(1970), 1799.[6] M. Bormann, S. Cierjacks et al, Z. Phys., 166(1962), 477.[7] W. Nagel and A. H. W. Aten, Jr. Physica., 31(1965), 1091.[8] G.S.. Mani, M. A. Melkanoff and I. Iari, Report CEA2380(1963).[9] B. T. Feid et a1, NYO-636 (1951) ,[10] J. L. Need, Phys. Rev., 129(1963), 1302.

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MA HUI-FANG, YANG ZHEN-GUO and GE LIN-XIAO. MEASUREMENT OF ISOMERIC CROSS-SECTION RATIO IN ¹³³Cs(n,γ) ¹³⁴Cs REACTION[J]. Chinese Physics C, 1982, 6(3): 373-377.

MA HUI-FANG, YANG ZHEN-GUO and GE LIN-XIAO. MEASUREMENT OF ISOMERIC CROSS-SECTION RATIO IN ¹³³Cs(n,γ) ¹³⁴Cs REACTION[J]. Chinese Physics C, 1982, 6(3): 373-377. shu

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Received: 1981-10-15
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

MEASUREMENT OF ISOMERIC CROSS-SECTION RATIO IN ¹³³Cs(n,γ) ¹³⁴Cs REACTION

Received Date: 1981-10-15
Accepted Date: 1900-01-01
Available Online: 1982-06-05

Abstract: The isomeric absolute cross-section have been measured for the reaction ¹³³Cs (n,c) ¹³⁴ Cs at 14.8 MeV neutron energy.The results are:σ_n,γ^134mCs=1.76±0.14mb;σ_n,γ^134gCs=5.17±0.41mb;σ_n,γ^134+gCs=6.93±0.55mb.The isomeric cross-section ratio is σ^134m_Cs/σ^134gCs=0.34±0.03 The experimental results are in agreement with the values given by S.M. Qaim andcompared with the theoretical results calculated by Huizenga-Vandenbosch theory.From this, the spin cut-off paramenter σ and the number of γ-Cascades have been de-termined.