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首页> 外文期刊>Physics of atomic nuclei >Isotopic Invariance of Fission Fragment Charge Distributions for Actinide Nuclei at Excitation Energies above 10 MeV
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Isotopic Invariance of Fission Fragment Charge Distributions for Actinide Nuclei at Excitation Energies above 10 MeV

机译:高于10 MeV激发能的Act系原子核裂变碎片电荷分布的同位素不变性

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摘要

The fragment mass and energy distributions from the proton-induced fission of compound nuclei ~(233)Pa, ~(234,236,237,239)Np, ~(239,240,241,243)Am, and ~(245)Bk at proton energy E_p = 10.3 and 22.0 MeV have been experimentally studied. It was revealed that the shapes of the asymmetric fission mass distributions are mainly defined by the proton numbers of compound nuclei and demonstrate only a weak dependence on the neutron ones. The detailed study of the fission fragment mass yields for compound nuclei Np and Am isotopic chains has shown that the asymmetric fission fragment charge distributions calculated within the unchanged charge density hypothesis for nuclei with equal Z_C practically coincide.
机译:质子能量E_p = 10.3和22.0 MeV时,质子诱发的复合核〜(233)Pa,〜(234,236,237,239)Np,〜(239,240,241,243)Am和〜(245)Bk的碎片质量和能量分布已得到经过实验研究。结果表明,不对称裂变质量分布的形状主要由复合核的质子数决定,仅表现出对中子的弱依赖性。对复合核Np和Am同位素链的裂变碎片质量产率的详细研究表明,在Z_C相等的原子核的不变电荷密度假设下,计算出的不对称裂变碎片电荷分布实际上是一致的。

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