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利用“背靠背”双裂变电离室和活化箔片技术,在两座脉冲反应堆稳态运行的中子场条件下,测量了180Hf与235U的平均俘获裂变截面比。在En为1.24和1.59MeV时,其截面比分别为:σγ(180Hf)/σf(235U)=0.03828(1±3.3%)和0.03309(1±3.3%)。
Using the “back to back” double fission ionization chamber and activated foil technology, the average capture fission cross section ratio of 180Hf and 235U was measured under the steady state neutron field of two pulse reactors. The cross sections of σγ (180Hf) / σf (235U) = 0.03828 (1 ± 3.3%) and 0.03309 (1 ± 3.3%) at En of 1.24 and 1.59MeV, ).