Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope 
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 by Measuring Its Three-Proton Decay

Kostyleva, D.; Mukha, I.; Acosta, L.; Casarejos, E.; Chudoba, V.; Ciemny, A. A.; Dominik, W.; Dueñas, J. A.; Dunin, V. B.; Espino, J. M.; Estradé, A.; Farinon, F.; Фомичев, А. С.; Geißel, H.; Gorshkov, A. V.; Grigorenko, L. V.; Janas, Z.; Kamiński, G.; Kiselev, O.; Knöbel, R.; Krupko, S. A.; Kuich, M.; Litvinov, Yu. A.; Marquínez-Durán, G.; Martel, I.; Mazzocchi, C.; Nociforo, C.; Orduz, Angie; Pfützner, M.; Piétri, S.; Pomorski, M.; Procházka, A.; Rymzhanova, S.; Sánchez-Benítez, Á. M.; Scheidenberger, C.; Simon, H.; Sitár, B.; Slepnev, R. S.; Stănoiu, M.; Strmeň, P.; Szarka, I.; Takechi, M.; Tanaka, Y. K.; Weick, H.; Winkler, M.; Winfield, J. S.; Xu, X.; Zhukov, M. V.

doi:10.1103/physrevlett.123.092502

Cited by 14 publications

(2 citation statements)

References 21 publications

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“…In addition, several broad resonances associated with 2p decay were reported in, e.g., 6 Be [19] and 11,12 O [20,21]. The unique experimental data on lifetimes and correlations between emitted protons has triggered considerable theoretical interest [22][23][24][25][26][27][28].…”

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Beyond the proton drip line: Bayesian analysis of proton-emitting nuclei

et al. 2020

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Background: The limits of the nuclear landscape are determined by nuclear binding energies. Beyond the proton drip lines, where the separation energy becomes negative, there is not enough binding energy to prevent protons from escaping the nucleus. Predicting properties of unstable nuclear states in the vast territory of proton emitters poses an appreciable challenge for nuclear theory as it often involves far extrapolations. In addition, significant discrepancies between nuclear models in the proton-rich territory call for quantified predictions.Purpose: With the help of Bayesian methodology, we mix a family of nuclear mass models corrected with statistical emulators trained on the experimental mass measurements, in the proton-rich region of the nuclear chart.Methods: Separation energies were computed within nuclear density functional theory using several Skyrme and Gogny energy density functionals. We also considered mass predictions based on two models used in astrophysical studies. Quantified predictions were obtained for each model using Bayesian Gaussian processes trained on separation-energy residuals and combined via Bayesian model averaging. Results:We obtained a good agreement between averaged predictions of statistically corrected models and experiment. In particular, we quantified model results for one-and two-proton separation energies and derived probabilities of proton emission. This information enabled us to produce a quantified landscape of proton-rich nuclei. The most promising candidates for two-proton decay studies have been identified. Conclusions:The methodology used in this work has broad applications to model-based extrapolations of various nuclear observables. It also provides a reliable uncertainty quantification of theoretical predictions.

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Beyond the proton drip line: Bayesian analysis of proton-emitting nuclei

et al. 2020

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“…Recently, more and more exotic particle emissions (e.g., 3p or 4p decay) have been experimentally observed. The ground state of 31 K has been found to exhibit a 3p decay [193]. Moreover, the newly discovered elements 8 C and 18 Mg are considered to exhibit 4p emissions [94,96].…”

Section: V3 Multi-proton Radioactivitymentioning

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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