The Gamow-state description of the decay energy spectrum of neutron-unbound 25O

Betán, R. Id; Madrid, Rafael de la

doi:10.1016/j.nuclphysa.2018.01.003

Cited by 8 publications

(4 citation statements)

References 35 publications

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“…At t = 0, the g.s wave function shows a broad momentum distribution that is indicative of spatial localization. At long times, the emitted nucleons move with the welldefined total momentum shown by a narrow resonance peak corresponding to the resonance's energy [56]. The gradual transition from the broad to narrow momentum distribution exhibits a pronounced interference pattern, which is universal for two-nucleon decays.…”

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confidence: 99%

Fermion Pair Dynamics in Open Quantum Systems

Wang

Nazarewicz

2021

Phys. Rev. Lett.

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confidence: 99%

Fermion Pair Dynamics in Open Quantum Systems

Wang

Nazarewicz

2021

Phys. Rev. Lett.

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“…[95]. This corresponds to an opposite trend for the momentum distribution of the wave function, in which the emitted nucleons move with a well-defined total momentum, as indicated by a narrow resonance peak at long times [187]. Figure 21 illustrates the dramatic changes in the wave function and configurations of 6 Be during the decay process.…”

Section: Iv2 Towards a Comprehensive Description Of Three-body Decaymentioning

confidence: 99%

Recent progress in two-proton radioactivity

et al. 2022

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During the last few decades, rare isotope beam facilities have provided unique data for studying the properties of nuclides located far from the beta-stability line. Such nuclei are often accompanied by exotic structures and radioactive modes, which represent the forefront of nuclear research. Among them, two-proton (2p) radioactivity is a rare decay mode found in a few highly proton-rich isotopes. The 2p decay lifetimes and properties of emitted protons hold invaluable information regarding the nuclear structures in the presence of a low-lying proton continuum; as such, they have attracted considerable research attention. In this review, we present some of the recent experimental and theoretical progress regarding the 2p decay, including technical innovations for measuring nucleonnucleon correlations and developments in the models that connect their structural aspects with their decay properties. This impressive progress should play a significant role in elucidating the mechanism of these exotic decays, probing the corresponding components inside nuclei, and providing deep insights into the open quantum nature of dripline systems.

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“…Although the formalism developed here is valid for any non-relativistic particle subject to a three-dimensional spherical potential consisting of a Coulombic term, a finite well, and a radial δ-δ contact interaction at the edge of the well, our main motivation is to analyze the already mentioned nuclear mean field potential. In fact, the Dirac δ interaction has been used for the calculation of resonant parameters and energy spectrum in [22], and it has also been employed to study the spectral function of the unbound nucleus 25 O [23]. Following the work [1], we now study the energy levels of protons and compare them with those of neutrons in the previous paper.…”

Section: Introductionmentioning

confidence: 99%

A solvable contact potential based on a nuclear model

2021

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We extend previous works on the study of a particle subject to a three-dimensional spherical singular potential including a $$\delta $$ δ –$$\delta '$$ δ ′ contact interaction. In this case, to have a more realistic model, we add a Coulombic term to a finite well and a radial $$\delta $$ δ –$$\delta '$$ δ ′ contact interaction just at the edge of the well, which is where the surface of the nucleus would be. We first prove that the we are able to define the contact potential by matching conditions for the radial function, fixing a self-adjoint extension of the non-singular Hamiltonian. With these matching conditions, we are able to find analytic solutions of the wave function and focus the analysis on the bound state structure characterizing and computing the number of bound states. For this approximation for a mean-field Woods–Saxon model, the Coulombic term enables us to complete the previous study for neutrons analyzing the proton energy levels in some doubly magic nuclei. In particular, we find the appropriate $$\delta '$$ δ ′ contribution fitting the available data for the neutron- and proton-level schemes of the nuclei $${}^{{208}}$$ 208 Pb, $${}^{{40}}$$ 40 Ca, and $${}^{{16}}$$ 16 O.

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The Gamow-state description of the decay energy spectrum of neutron-unbound 25O

Cited by 8 publications

References 35 publications

Fermion Pair Dynamics in Open Quantum Systems

Fermion Pair Dynamics in Open Quantum Systems

Recent progress in two-proton radioactivity

A solvable contact potential based on a nuclear model

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