Two-proton emission and related phenomena

Pfützner, M.; Mukha, I.; Wang, S. M.

doi:10.1016/j.ppnp.2023.104050

Cited by 12 publications

(3 citation statements)

References 258 publications

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“…Thus, in figure 6(b) we also show the lowest spins I lowest (I lowest < I unpair ) at which such configurations become proton bound in the calculations without pairing. This leads to lowering of the spins as compared with those given in figure 6(a) in some nuclei (such as 16,17 Ne) located close to the proton drip line. The CRHB calculations with pairing are needed to either confirm or reject this lowering of the spins but they go beyond the scope of the present paper.…”

Section: Rotation Induced Extension Of the Nuclear Landscapementioning

confidence: 85%

“…On the other hand, the introduction of new experimental facilities such as FRIB will potentially extend the studies of rotational structures to significantly more proton-and neutron-rich nuclei as compared with those investigated till now. At present, the properties of very proton-and neutron-rich nuclei located in the vicinity of respective drip lines are in the focus of experimental and theoretical studies [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Fast rotation of nuclei with extreme isospin in the vicinity of neutron and proton drip lines

Afanasjev,

Teeti,

Taninah

2024

Phys. Scr.

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The analysis of the present understanding of collective rotation in very neutron-rich nuclei is presented. It is shown that collective rotation can lead to the increase of stability of rotational states with increasing spin. The detailed investigation of rotational excitations in very proton-rich nuclei conﬁrms this conclusion and indicate that experimental studies of such features are more feasible in the nuclei near proton drip line. They also show that rotational bands which are proton quasi-bound at zero or low spins can be transformed into proton bound ones at high spin by collective rotation of nuclear systems. This is due to strong Coriolis interaction which acts on high-j or strongly mixed M orbitals and drives the highest in energy occupied single-particle states into negative energy domain. These physical mechanisms lead to a substantial extension of the nuclear landscape beyond the spin zero proton drip line. In addition, a new phenomenon of the formation of giant proton halos in rotating nuclei emerges: it is triggered by the occupation of strongly mixed M intruder orbitals.

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Section: Rotation Induced Extension Of the Nuclear Landscapementioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Fast rotation of nuclei with extreme isospin in the vicinity of neutron and proton drip lines

Afanasjev,

Teeti,

Taninah

2024

Phys. Scr.

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“…The 2p radioactivity, akin to α decay and 1p radioactivity, is one of the decay modes of atomic nuclei. This captivating decay mode represents one of the characteristic phenomena for nuclei beyond the proton drip line [24]. The 2p radioactivity was firstly predicted by Zel'dovich and Goldansky in 1960 [25-27].…”

Section: Introductionmentioning

confidence: 99%

Laser-assisted two-proton radioactivity

Zou,

Cheng,

et al. 2024

J. Phys. G: Nucl. Part. Phys.

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In this work, we systematically investigate the two-proton ($2p$) radioactivity assisted by an ultra-intense laser field within a deformed one-parameter model (OPM). The results show that the ultra-intense laser hardly affects the preformation probability of the emitted $2p$-pair, but it can change the $2p$ radioactive half-lives to a finite extent by affecting the penetrability probability. Moreover, we compare the responses of different $2p$ radioactivity nuclei to the laser field, and it is found that the $2p$ radioactivity of nuclei with a low decay width are more easily influenced by the intense laser field. Furthermore, the effects of different physical parameters of a laser pulse on the $2p$ radioactivity were also discussed. The calculations indicate that the lasers characterized by shorter wavelengths and higher intensities exert a more significant influence on the rate of the average change in pulse duration. Finally, we extended the deformed OPM to predict the half-lives of $2p$ radioactivity candidates and identified the possible experimental objects of the laser-assisted $2p$ radioactivity. This study may promote the possibility of future experimental investigations on extensive facilities like GSI and ELI-NP, etc.

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