Mass Shell and Even-odd Effects in Radiative Capture Reaction

LIU Jian-Feng; Huo Yu-Kun; YUAN Zhu-Shu

Chinese Physics C> 1991, Vol. 15> Issue(4) : 349-357

Mass Shell and Even-odd Effects in Radiative Capture Reaction

Physics Department,Zhengzhou University,Zengzhou 4500522 Nuclear Science Department Fudan University Shanghai 200433

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This paper investigates the mass,shell and even-odd effects of the nonstatistical and statistical processes in the radiative nucleon capture reactions.The (n,γ) cross sections for 33 even-neutron target nuclides were studied at En of 0.1 to 3MeV.The results indicate that the nonstatistical capture cross sections do not present any systematically varying pattern with mass number,except for a weak shell effect.The statistical capture cross sections,which depend strongly on the level density,display obvious mass,shell and even-odd effects.The nonstatistical fractions show prominent downward tendency with mass number,as well as the shell effect.

References

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LIU Jian-Feng, Huo Yu-Kun and YUAN Zhu-Shu. Mass Shell and Even-odd Effects in Radiative Capture Reaction[J]. Chinese Physics C, 1991, 15(4): 349-357.

LIU Jian-Feng, Huo Yu-Kun and YUAN Zhu-Shu. Mass Shell and Even-odd Effects in Radiative Capture Reaction[J]. Chinese Physics C, 1991, 15(4): 349-357. shu

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Received: 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

Mass Shell and Even-odd Effects in Radiative Capture Reaction

Corresponding author: LIU Jian-Feng,

Physics Department,Zhengzhou University,Zengzhou 4500522 Nuclear Science Department Fudan University Shanghai 200433

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1991-04-05

Abstract: This paper investigates the mass,shell and even-odd effects of the nonstatistical and statistical processes in the radiative nucleon capture reactions.The (n,γ) cross sections for 33 even-neutron target nuclides were studied at En of 0.1 to 3MeV.The results indicate that the nonstatistical capture cross sections do not present any systematically varying pattern with mass number,except for a weak shell effect.The statistical capture cross sections,which depend strongly on the level density,display obvious mass,shell and even-odd effects.The nonstatistical fractions show prominent downward tendency with mass number,as well as the shell effect.

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Mass Shell and Even-odd Effects in Radiative Capture Reaction

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