Measurement of Cross Sections for 50Cr(n,2n)49Cr and 52Cr(n,2n)51Cr Reactions Induced by 13.5—14.6MeV Neutrons

  • Cross sections for (n,2n) reactions are measured on chromium isotopes at the neutron energies of 13.5—14.6MeV using the activation technique. The data of the cross sections are reported for the following reactions: 50Cr (n,2n)49 Cr and 52Cr (n,2n)51 Cr. The cross sections of 50Cr (n,2n)49 Cr reaction are 3.4±0.2,6.8±0.3,21.5±1.0 and 25.0±1.2mb at the neutron energies of 13.5±0.3 ,14.1±0.2,14.4±0.3 and 14.6±0.3MeV incident neutron energies,respectively.The cross sections of 185±10,193±9,258±13 and 332±16mb for 52Cr (n,2n)51 Cr reaction are given at the neutron energies of 13.5±0.3 ,14.1±0.2,14.4±0.3 and 14.6±0.3MeV,respectively.The samples wrapped in cadmium foil are irradiated in order to avoid the effect of 50Cr (n, g)51Cr reaction induced by thermal neutron to 52Cr (n,2n)51Cr reaction,and the measured results are compared with published data. Neutron energies are determined by the method of cross-section ratios of 90Zr(n,2n) 89m+gZr and 93 Nb(n,2n) 92mNb reactions, and the neutron fluencies are determined using the monitor reaction 93 Nb(n,2n) 92mNb.
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  • [1] . Wagner M,Vonach H,Pavlik A et al. Physik Daten Physics Data ,1990 ,1325 :1752. Levis V E ,Zieba KJ . Nucl. Instrum.Methods ,1980 ,174 :1413. WANG Yong2Chang , YUAN Jun2Qian , REN Zhong2Liang et al. HEP NP ,1990 ,14(10) :919 (in Chinese)(王永昌,袁俊谦,任忠良等. 高能物理与核物理,1990 , 14 (10) :919)4. Firestone R B ,Shirley V S. Table of Isotopes ,New York ,19965. Ghorai S K, Williams J R , Alford W L. J . Phys. G:Nucl. Phys. ,1987 ,13 :4056. Bormann M. See Experimental Date File (CSISRS) (1973) , NationalNeutron Cross Section Center , Brookhaven National Lab. , 1965 , Up2ton , NY7. Bormann M, Behrend A , Riehle I et al. Nucl. Phys. , 1968 ,A115 :3098. Qaim SM. Nucl. Phys. , 1972 ,A185 :6149. Valkonen M. J . Inorg. Nucl. Chem. ,1974 ,36 :71510. Pepelnik R , Anders B , Bahal B M. Conf . on Nucl. Data f . Basic a.Appl. Sci. , Santa Fe. ,1985 ,1 :211 (JA46)11. Sigg R A. Dissertation Abstract ,1976 , B37 :223712. Dighe P M, Pansare F R , Ranjita Sarkar et al. Indian Journal of Pureand Applied Physics , 1991 , 29 :66513. Khurana C S , Hans H S. Nucl. Phys. , 1961 , 28 :56014. Ikeda Y, Konno C , Oishi Ket al. JAERI 1312 ,198815. Chatterjee A , Nath A , Ghose A M. Trombay Report BARC 474 ,1970.50 , India16. Strain J E , Ross WJ . Oak Ridge National Laboratory Report ORNL ,3672 ,1965.17. Wagner M, Winkler G, Vonach H et al. Annals of Nuclear Energy ,1989 , 16(12) :62318. Araminowicz J , Dresler J . INR 1464 ,1973 ,1419. Simakov S P , Androsenko A A , Androsenko P A et al. Vop. At. Naukii Tekhn. , Ser. Yadernye Konstanty , 1993 ,4 :9320. Chittenden D M, Gardner D G. University of Arkansas Report , A2ARK261 ,1961. 121. Lychagin A A , Simakov S P , Devkin B V et al. Symp. on Nucleon In2duced Reactions , Smolenice , 1988. 27222. Maslov GN , Nasyrov F , Pashkin N F. Vop. At. Nauki i Tekhn. , Ser.Yaderye Konstanty , 1972 ,9 :5023. Molla N I , Miah R U , Basunia S et al. Conf . on Nucl. Data for Sci.and Techn. , Trieste , 1997 , 1 :51724. Mukherjee S K, Ganguly A K, Majumder N K. Proc. Phys. Soc. ,1961 , 77 :50825. ZHOU Mu-Yao ,ZHANG Yong-Fa , WANG Chuan-Shan et al. Chinese J .of Nucl. Phys. , 1987 , 9 :3426. Rayburn L A. Phys. Rev. , 1961 , 122 :16827. Ribansky I , Panteleev TS , Stoeva L. Annals of Nuclear Energy , 1985 ,12 (11) :57728. Sailer K, Daroczy S , Raics P et al. Int. Nucl. Data Cmmittee IAEA Re2port INDC (SEC) , 1977 ,61 ,5529. Wenusch R, Vonach H. Oesterr. Akad. Wiss. , Math. Naturw. Anzeiger ,1962 , 99 :1
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ZHOU Feng-Qun, YI Yan-Ling, TUO Fei, CAO Xue-Xiang and KONG Xiang-Zhong. Measurement of Cross Sections for 50Cr(n,2n)49Cr and 52Cr(n,2n)51Cr Reactions Induced by 13.5—14.6MeV Neutrons[J]. Chinese Physics C, 2005, 29(7): 644-647.
ZHOU Feng-Qun, YI Yan-Ling, TUO Fei, CAO Xue-Xiang and KONG Xiang-Zhong. Measurement of Cross Sections for 50Cr(n,2n)49Cr and 52Cr(n,2n)51Cr Reactions Induced by 13.5—14.6MeV Neutrons[J]. Chinese Physics C, 2005, 29(7): 644-647. shu
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Measurement of Cross Sections for 50Cr(n,2n)49Cr and 52Cr(n,2n)51Cr Reactions Induced by 13.5—14.6MeV Neutrons

    Corresponding author: ZHOU Feng-Qun,
  • Department of Modern Physics,Lanzhou University,Lanzhou 730000,China2 Department of Physics,Pingdingshan University,Pingdingshan 467000,China

Abstract: Cross sections for (n,2n) reactions are measured on chromium isotopes at the neutron energies of 13.5—14.6MeV using the activation technique. The data of the cross sections are reported for the following reactions: 50Cr (n,2n)49 Cr and 52Cr (n,2n)51 Cr. The cross sections of 50Cr (n,2n)49 Cr reaction are 3.4±0.2,6.8±0.3,21.5±1.0 and 25.0±1.2mb at the neutron energies of 13.5±0.3 ,14.1±0.2,14.4±0.3 and 14.6±0.3MeV incident neutron energies,respectively.The cross sections of 185±10,193±9,258±13 and 332±16mb for 52Cr (n,2n)51 Cr reaction are given at the neutron energies of 13.5±0.3 ,14.1±0.2,14.4±0.3 and 14.6±0.3MeV,respectively.The samples wrapped in cadmium foil are irradiated in order to avoid the effect of 50Cr (n, g)51Cr reaction induced by thermal neutron to 52Cr (n,2n)51Cr reaction,and the measured results are compared with published data. Neutron energies are determined by the method of cross-section ratios of 90Zr(n,2n) 89m+gZr and 93 Nb(n,2n) 92mNb reactions, and the neutron fluencies are determined using the monitor reaction 93 Nb(n,2n) 92mNb.

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