Pauli-principle driven correlations in four-neutron nuclear decays

Apr 18, 2019, 2:15 PM


Oral Nuclear Physics Nuclear Physics


Mr Pavel Sharov (JINR)


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 $4n$-precursor \isotope[7]{H} Fingerprints of it nuclear structure or/and decay dynamics are predicted.

Primary authors

Mrs Arailym Ismailova (JINR) Prof. Leonid Grigorenko (JINR) Prof. Mikhail Zhukov (Department of Physics, Chalmers University of Technology) Mr Pavel Sharov (JINR)

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