Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture

LIU Jian-Feng; LI Chun-Juan; ZHANG Guo-Hui

Chinese Physics C> 2004, Vol. 28> Issue(8) : 832-837

Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture

Department of Physics,Zhengzhou University,Zhengzhou 450052,China2 School of Physics,Peking University,Beijing 100871,China

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Abstract：
The mass number dependence and the neutron incident energy dependence of the radiative capture cross sections from various reaction mechanisms of the neutron radiative capture process have been examined in the nuclear mass region A<100.Two reaction mechanisms are considered.They are compound nucleus statistical process and two nonstatistical process,i.e.,radiative capture in compound elastic scattering channels and direct semidirect radiative capture in shape elastic scattering channels.Incident energy of neutron is chosen in the region of 0.1-20MeV.The calculated results are given and compared with the experimental values for ²⁷Al,^{40^{Ca,⁶³Cu and ⁹³Nb.The variational pattern is analyzed and discussed.}}

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. Lane A M,Thmas R G. Rev.Mod. Phys. , 1958, 30: 2572. DING Da-Zhao. Progress in Neutron Radiative Capture Study. NuclearPhysics(Material Compilation of the Conference in 1978) . Beijing:Atomic Energy Press, 1979, 292-306(in Chinese)(丁大钊.中子辐射俘获研究进展.原子核物理(1978年会议资料选编).北京:原子能出版社，1979,292-306)3. Raman S et al. Phys. Rev. , 1985, C32: 184. HUO Yu-Kun et al. Nucl. Phys. , 1983, A406: 15. LIU Jian-Feng et al .High Energy Phys. and Nucl. Phys. , 1983, 7 (3) :355(in Chinese)(刘建峰等.高能物理与核物理,1983,7(3):355)6. Brown G E. Nucl. Phys. , 1964, 57: 3397. Kopecky J, Uhl M. Phys. Rev. , 1990, C41(5) : 19418. LIU Jian-Feng et al.High Energy Phys. and Nucl .Phys. , 2001, 25(10) :9949. LIU Jian-Feng et al .High Energy Phys. and Nucl. Phys. , 2003, 27(5) :430(in Chinese)(刘建峰等.高能物理与核物理,2003,27(5):430)10. LIU Jian Feng et al .High Energy Phys. and Nucl. Phys. , 1996, 20(6) :563(in Chinese)(刘建峰等.高能物理与核物理，1996,20(6):563)11. Potokar M. Phys.Lett. , 1973, 3: 34612. Becchetti F D et al .Phys. Rev. , 1969, 182(4) : 119013. Gilbert A, Cameron A G W. Can. J. Phys. , 1965, 43: 144614. Dietrich S S et al. Atomic Dat a and Nuclear Data Tables, 1988, 38: 19915. EXFOR(EXchange FORmat) . Computerized System for the Storage, Ret rieval and International Exchange of Experimental Nuclear React ion Dat a, Coordinat ed by the IAEA Nuclear Data Section

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LIU Jian-Feng, LI Chun-Juan and ZHANG Guo-Hui. Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture[J]. Chinese Physics C, 2004, 28(8): 832-837.

LIU Jian-Feng, LI Chun-Juan and ZHANG Guo-Hui. Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture[J]. Chinese Physics C, 2004, 28(8): 832-837. shu

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Received: 2003-10-11
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 on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture

Corresponding author: LIU Jian-Feng,

Department of Physics,Zhengzhou University,Zhengzhou 450052,China2 School of Physics,Peking University,Beijing 100871,China

Received Date: 2003-10-11
Accepted Date: 1900-01-01
Available Online: 2004-08-05

Abstract: The mass number dependence and the neutron incident energy dependence of the radiative capture cross sections from various reaction mechanisms of the neutron radiative capture process have been examined in the nuclear mass region A<100.Two reaction mechanisms are considered.They are compound nucleus statistical process and two nonstatistical process,i.e.,radiative capture in compound elastic scattering channels and direct semidirect radiative capture in shape elastic scattering channels.Incident energy of neutron is chosen in the region of 0.1-20MeV.The calculated results are given and compared with the experimental values for ²⁷Al,^{40^{Ca,⁶³Cu and ⁹³Nb.The variational pattern is analyzed and discussed.}}

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Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture

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Study on the Mass Energy Relativities of the Reaction Mechanisms in the Neutron Radiative Capture

Corresponding author: LIU Jian-Feng,

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