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arXiv 0907.3347nucl-th
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CF-252冷fission产率的显微镜描述

Microscopic description of Cf-252 cold fission yields

M. Mirea, D. S. Delion, A. Sandulescu

摘要:

在双中心壳层模型下研究了~(252)Cf的冷裂变,计算了~(252)Cf的势能面。用半经典穿透方法估算了裂变产额。结果表明,总势能的内冷谷与Z=50幻数强相关。只有考虑质量和电荷不对称自由度,与实验值的协议是非常大的改善。因此,252 Cf的冷裂变确实是一种类似Sn的放射性,与另外两种“神奇放射性”有关,即α衰变和重团簇衰变,也称为类似Pb的放射性。这一计算结果为利用反聚变过程产生超重核的穿透截面的估算提供了必要的理论依据。

英文摘要:

We investigate the cold fission of 252Cf within the two center shell model to compute the potential energy surface. The fission yields are estimated by using the semiclassical penetration approach. It turns out that the inner cold valley of the total potential energy is strongly connected with Z=50 magic number. The agreement with experimental values is very much improved only by considering mass and charge asymmetry degrees of freedom. Thus, indeed cold fission of 252Cf is a Sn-like radioactivity, related the other two "magic radioactivities", namely alpha-decay and heavy-cluster decay, called also Pb-like radioactivity. This calculation provides the necessary theoretical confidence to estimate the penetration cross section in producing superheavy nuclei, by using the inverse fusion process.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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