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14MeV快中子对YBa₂Cu₃O_7-δ熔融织构样品的辐照效应

EFFECT OF 14MeV FAST NEUTRON IRRADIATION ON MELT-TEXTURED YBa₂Cu₃O_7-δ

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【作者】金继荣；徐其高；张贻瞳；张治平；金新；郑松祈；吉和林；姚希贤；肖玲；任洪涛；贺庆；

【Author】 Jin Jirong Xu Qigao Zhang Yitong Zhang Zhiping Jin Xin Zheng Songqi Ji Helin Yao XixianDepartment of Physics and National Laboratory of Solid State Murostructures, Nanjing University. Nanjing 210008Xiao Ling Ren Hongtao He QingDepartment of Superconductivity, General Research Institute for Non-ferrous Metals, Beijing 100088

【机构】南京大学物理系固体微结构实验室南京；北京有色金属研究总院；北京有色金属研究总院 210008； 210008；北京 100088；北京 100088；

【摘要】本文研究了单能中子（E_n～14MeV）对YBCO熔融织构样品的辐照效应。用磁测量法分别测量了该样品在中子辐照前后,在同一磁场下的磁化强度之比为M_irr./M_nonirr.≈3.5,其结果优于国外近期报道的结果。此外,还和低通量慢中子以及高通量快中子对YBCO的辐照效应做了比较,并从核物理方面进行了讨论。更多还原

【Abstract】 The effect of irradiation with single-energy neutrons (En = 14MeV) on melt-textured YBa2Cu3O7-δ sample was studied in this paper. Magnetic measurements on the sample both before and after the neutron irradiation showed an enhancement of hysteresis width by a factor of 3.5 in the same external magnetic field, which is better than the results reported recently [3-6] . Besides, a comparison of the irradiation effects of slow neutrons of low fluence with fast neutrons of high fluence was made. Finally we discussed the experimental results in viewpoint of nuclear physics.更多还原