Study of Nuclear Reaction Mechanism in E≤50MeV Energy Region

SHEN Qing-Biao

Chinese Physics C> 1993, Vol. 17> Issue(8) : 739-744

Study of Nuclear Reaction Mechanism in E≤50MeV Energy Region

SHEN Qing-Biao ^,

Institute of Atomic Energy,Beijing 102413

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The contribution on the inelastic scattering spectra of discrete level part mainly comes from direct reactions.For the sigle-particle emission cross section calculated with the statistical theories,when the incident energy is less than 10MeV the main contribution comes from the equilibrium emission,but when the incident energy reaches 20MeV,more than 90% contribution comes from the pre-equilibrium emission.The contribution of the pre-equilibrium process to the second particle emission can be neglected when the incident energy is less than 20MeV and the contribution of the pre-equilibrium process to the third particle emission can be neglected when the incident energy is less than 50MeV.

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张竞上、杨显俊，高能物理与核物理，13(1989),822.[2]Zhang Jingshang et al.，Commun. in Theor. Phys. (Beijing, China),10(1988),33.[3]Chonghai Cai, Qingbiao Shen,"CMUP2-A Program for Calculating complex Reactions of a Medium-Heavy Nu-cleus with charged Particles",Nucl. Sci. Eng.，to be published.[4]V. McLane, C. L. Dunford, P. F. Rose, Neutron Cross Sections, BNL-325, Vol.2, Academic Press,1988.[5]S. Mellema, R. W. Finlay, F. S. Dietrich, Phys. Rev.，C33(1986),481.[6]P. D. Kunz, "Distorted Wave Code DWUCK4", University of Colorado.[7]A. Takahashi, Y. Sasaki, H. Sugimoto, JAERI-M 88-065,1988,p. 279;A. Takahashi, private communication vis Zhou Delin(1990).[8]M. Baba, M. Ishikawa, N. Yabuta, T. Kikuchi, H. Wakabayashi, N. Hirakawa, Proc. Conf, on Nuclear Da-to for Science and Technology, May 30-June 3, 1988, Mito, Editor S. Lgarasi, Japan Atomic Energy Re-search Institute, p. 291.[9]王书暖等，第四次核数据会议论文选编，CNDC-85011, p. 144.1986.

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SHEN Qing-Biao. Study of Nuclear Reaction Mechanism in E≤50MeV Energy Region[J]. Chinese Physics C, 1993, 17(8): 739-744.

SHEN Qing-Biao. Study of Nuclear Reaction Mechanism in E≤50MeV Energy Region[J]. Chinese Physics C, 1993, 17(8): 739-744. shu

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Received: 1900-01-01
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

Study of Nuclear Reaction Mechanism in E≤50MeV Energy Region

SHEN Qing-Biao ^,

Corresponding author: SHEN Qing-Biao,

Institute of Atomic Energy,Beijing 102413

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1993-08-05

Abstract: The contribution on the inelastic scattering spectra of discrete level part mainly comes from direct reactions.For the sigle-particle emission cross section calculated with the statistical theories,when the incident energy is less than 10MeV the main contribution comes from the equilibrium emission,but when the incident energy reaches 20MeV,more than 90% contribution comes from the pre-equilibrium emission.The contribution of the pre-equilibrium process to the second particle emission can be neglected when the incident energy is less than 20MeV and the contribution of the pre-equilibrium process to the third particle emission can be neglected when the incident energy is less than 50MeV.

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Study of Nuclear Reaction Mechanism in E≤50MeV Energy Region

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