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arXiv 1808.00513nucl-th
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四中子核衰变中Pauli原理驱动的关联

Pauli-principle driven correlations in four-neutron nuclear decays

P. G. Sharov, L. V. Grigorenko, A. Ismailova, M. V. Zhukov

摘要:

用唯象五体方法研究了$4n$的同时非顺序四中子发射(或“真”$4n$衰变)机制。这种方法类似于经常应用于$2n$ -和$2p$ -衰变的直接衰变到连续谱的模型。它表明,$4n$ -衰变碎片应具有特定的能量和角度的相关性,反映强的空间相关性的“价”核子轨道在其$4n$ -前体。由于泡利不相容原理,价态中子被推到$4n$ -前体结构中的质子允许的构型,这导致“泡利聚焦”效应。对$4n$ -前体$^7$ H和$^{28}$ O的泡利聚焦观测前景进行了讨论。预测了它们的原子核结构或/和衰变动力学的指纹。

英文摘要:

Mechanism of simultaneous non-sequential four-neutron ($4n$) emission (or `true' $4n$-decay) has been considered in phenomenological five-body approach. This approach is analogous to the model of the direct decay to the continuum often applied to $2n$- and $2p$-decays. It is demonstrated that $4n$-decay fragments should have specific energy and angular correlations reflecting strong spatial correlations of `valence' nucleons orbiting in their $4n$-precursors. Due to the Pauli exclusion principle, the valence neutrons are pushed to the symmetry-allowed configurations in the $4n$-precursor structure, which causes a `Pauli focusing' effect. Prospects of the observation of the Pauli focusing have been considered for the $4n$-precursors $^7$H and $^{28}$O. Fingerprints of their nuclear structure or/and decay dynamics are predicted.

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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