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Chinese Physics C> 1998, Vol. 22> Issue(4) : 302-306 

Neutron Yields and Neutron Emission Rate in the ForwardDirection for 50 MeV/u 18O-ion on Thick Be,Cu,Au Targets

  •  Institute of Modern Physics,The Chinese Academy of Scienses, Lanzhou 730000

  • The neutron yields and the neutron emission rates in the forward direction for 50MeV/u 18O-ion induced reactions on thick Be, Cu, Au targets have been measured using the threshold detector activation method. The measured results indicate that the neutron yield and the neutron emission rate depend on the atomic number of target nuclei; neutron yield for the lighter target is greater than that for the heavier one. The neutron yield for 50MeV/u 18O-ion on Cu is about four times as large as that for 50MeV/u 12C-ion on Cu when incident energies per nucleon are identical.
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    [1] Hubbard E L,Main R M,Pyle R V.phys.Rev.,1960,118:507-514[2]Clapier F,Zaidins C S.Nucl.Instr.and Meth,1983,217:489-494[3]Clapier F.Oeme des Merisiers,1979[4]CEN-S/ SPR/ SRJ/ 78-341,1977[5]Service de Radio protection-IPN Orsay（intrnal report）,1978[6]Festag J G.5th Intemtional Congress of IRPA,Jerualen,1980[7]Ohnesorge W F,Butler M H et al.Health Physics.1980,39:633-636[8]Tugn J.w N et at.Hs-RP/TM180-68CERNTeckincal Memorandum1980[9]Guo Z Y,Allen p T,Doucas G et al.Nucl and Meth,1987,B29:500-507[10]Bertini H W,santoro R T,Hermann O W.Phys.Rev.,1976,C14:590-595[11]Gabriel T A et al.ORNL-TM-334,1975[12]Li Guisheng.Nuclea Techniques（in Chinese）,1993,16:370-376[13]Charalambus St,Dutrannois J,Goebel K.CERN/DI/HP90,1966,1-39[14]Hargreaves D M,Stevenson G R.Rutherford Laboratory RP/PN37,1969,1-7[15]Li,Guisheng,wangJ ing,Zhao Yansen et al,Journal of Nuclear and Radio chemistry（in Chinese）,1993,15:193-197

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Li Guisheng, Zhang Tianmei, Li Zongwei, Su Youwu and Zhang Shumin. Neutron Yields and Neutron Emission Rate in the ForwardDirection for 50 MeV/u 18O-ion on Thick Be,Cu,Au Targets[J]. Chinese Physics C, 1998, 22(4): 302-306.
Li Guisheng, Zhang Tianmei, Li Zongwei, Su Youwu and Zhang Shumin. Neutron Yields and Neutron Emission Rate in the ForwardDirection for 50 MeV/u 18O-ion on Thick Be,Cu,Au Targets[J]. Chinese Physics C, 1998, 22(4): 302-306. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Neutron Yields and Neutron Emission Rate in the ForwardDirection for 50 MeV/u 18O-ion on Thick Be,Cu,Au Targets

    Corresponding author: Li Guisheng,
  • Institute of Modern Physics,The Chinese Academy of Scienses, Lanzhou 730000
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1998-04-05

Abstract: The neutron yields and the neutron emission rates in the forward direction for 50MeV/u 18O-ion induced reactions on thick Be, Cu, Au targets have been measured using the threshold detector activation method. The measured results indicate that the neutron yield and the neutron emission rate depend on the atomic number of target nuclei; neutron yield for the lighter target is greater than that for the heavier one. The neutron yield for 50MeV/u 18O-ion on Cu is about four times as large as that for 50MeV/u 12C-ion on Cu when incident energies per nucleon are identical.

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