14MeV快中子对YBa_2Cu_3O_(7-δ)熔融织构样品的辐照效应  

EFFECT OF 14MeV FAST NEUTRON IRRADIATION ON MELT-TEXTURED YBa_2Cu_3O_(7-δ)

作　　者：金继荣 徐其高[1] 张贻瞳 张治平[1] 金新[1] 郑松祈[1] 吉和林 姚希贤[1] 肖玲[2] 任洪涛[2] 贺庆[2] 

机构地区：[1]南京大学物理系固体微结构实验室南京,210008 [2]北京有色金属研究总院,北京100088

出　　处：《低温物理学报》1992年第4期254-258,共5页Low Temperature Physical Letters

基　　金：国家超导联合研究开发中心资助项目

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。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.

关 键 词：快中子 磁化强度 YBACUO 辐照效应 

分 类 号：O511.1[理学—低温物理]