热中子和裂变谱中子诱发~(235)U裂变时几个核素累计产额的绝对测量

THE ABSOLUTE DETERMINATION OF CUMULATIVE YIELD OF SEVERAL NUCLIDES FROM THERMAL NEUTRON AND FISSION SPECTRUM NEUTRON INDUCED FISSION OF ~(235)U

摘要: 本文用放化法测定了~(235)U热中子裂变时~(95)Zr,~(99)Mo和~(144)Ce的绝对累计产额,其结果分别为(6.39±0.21)％,(6.08±0.16)％和(5.34±0.34)％,以及~(235)U裂变谱中子裂变时~(95)Zr,~(99)Mo,~(103)Ru,~(106)Ru,~(144)Ce和~(147)Nd的绝对累计产额,其结果分别为(6.56±0.28)％,(6.38±0.18)％,(3.36±0.18)％,(0.638±0.045)％,(5.28±0.24)％,(2.36±0.11)％。

Abstract: It is reported in this paper that during the thermal neutron fission of 235U,theabsolute cumulative yields of 95Zr, 99Mo and 144Ce as determined by radiochemicalmethod,are(6.39±0.21)％,(6.084±0.16)％and(5.34±0.34)％ respectively.Whereasfor the fission of fission spectrum neutron of 235U,cumulative yields of 95Zr,99Mo,103Ru,106Ru,144Ce and 147Nd are(6.56±0.28)％,(6.38±0.18)％,(3.36±0.18)％,(O.638±O.045)％,(5.28±0.20)％and 2.36±0.11％respectively.