Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of <SUP>197</SUP>Au

LIU Jian-Feng; ZHAO Wei-Juan; WANG Feng-Ge; SU Zong-Di

Chinese Physics C> 2001, Vol. 25> Issue(10) : 994-1001

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Department of Physics, Zhengzhou University, Zhengzhou, 450052, China2 China Institute of Atomic Energy, Beijing, 102413, China

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Abstract：
The aim of this paper is to explain theoretically the abnormal protuberances near and after 5.5 MeV in the gamma spectra of the (n, γ) reactions for the nulei in the regions of 110≤A≤140 and 180≤A≤210.
Supposing that in the primary and cascade gamma de-excitation processes of the compound nu- cleus, besides the giant dipole resonance model, there exist the deexcitation processes of the excited states of ⁶He,⁶Li,⁶Be,⁷Li and ⁷Be particle Clusters, the γ-ray strength function in which these pro- cesses are contained was constructed. The (n ,γ) reaction cross sections and the gamma energy spec- tra in the neutron incident energy region from 0.01 MeV to 3MeV for ¹⁹⁷Au were calculated. The re- suIts are in better coincidence with the experiments. Especially for the gamma energy spectra, the abnormal protuberances near and after 5.5MeV were reproduced very well.

References

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LIU Jian-Feng, ZHAO Wei-Juan, WANG Feng-Ge and SU Zong-Di. Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au[J]. Chinese Physics C, 2001, 25(10): 994-1001.

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Received: 2000-09-22
Revised: 1900-01-01

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通讯作者: 陈斌, [email protected]

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Corresponding author: LIU Jian-Feng,

Department of Physics, Zhengzhou University, Zhengzhou, 450052, China2 China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2000-09-22

Accepted Date: 1900-01-01

Available Online: 2001-10-05

Abstract: The aim of this paper is to explain theoretically the abnormal protuberances near and after 5.5 MeV in the gamma spectra of the (n, γ) reactions for the nulei in the regions of 110≤A≤140 and 180≤A≤210.
Supposing that in the primary and cascade gamma de-excitation processes of the compound nu- cleus, besides the giant dipole resonance model, there exist the deexcitation processes of the excited states of ⁶He,⁶Li,⁶Be,⁷Li and ⁷Be particle Clusters, the γ-ray strength function in which these pro- cesses are contained was constructed. The (n ,γ) reaction cross sections and the gamma energy spec- tra in the neutron incident energy region from 0.01 MeV to 3MeV for ¹⁹⁷Au were calculated. The re- suIts are in better coincidence with the experiments. Especially for the gamma energy spectra, the abnormal protuberances near and after 5.5MeV were reproduced very well.

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Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

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Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au

Study on γ-Ray Strength Functions and Energy Spectra in the Neutron Radiative Capture of ¹⁹⁷Au