Proton emission – new results and future prospects

Page, R. D.

doi:10.1051/epjconf/201612301007

Cited by 3 publications

(4 citation statements)

References 42 publications

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“…4 of that paper the two-proton decay is seen to proceed as a sequential emission. Instead, in the two-proton decay of 31 Ar [81] the simultaneous emission of the two protons fits the data well. But sequential decays might also describe the experimental data.…”

Section: Two-proton Decaymentioning

confidence: 78%

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Recent developments in radioactive charged-particle emissions and related phenomena

Liotta

Wyss

2019

Progress in Particle and Nuclear Physics

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The advent and intensive use of new detector technologies as well as radioactive ion beam facilities have opened up possibilities to investigate alpha, proton and cluster decays of highly unstable nuclei. This article provides a review of the current status of our understanding of clustering and the corresponding radioactive particle decay process in atomic nuclei. We put alpha decay in the context of charged-particle emissions which also include one-and two-proton emissions as well as heavy cluster decay. The experimental as well as the theoretical advances achieved recently in these fields are presented. Emphasis is given to the recent discoveries of charged-particle decays from proton-rich nuclei around the proton drip line. Those decay measurements have shown to provide an important probe for studying the structure of the nuclei involved. Developments on the theoretical side in nuclear many-body theories and supercomputing facilities have also made substantial progress, enabling one to study the nuclear clusterization and decays within a microscopic and consistent framework. We report on properties induced by the nuclear interaction acting in the nuclear medium, like the pairing interaction, which have been uncovered by studying the microscopic structure of clusters. The competition between cluster formations as compared to the corresponding alpha-particle formation are included. In the review we also describe the search for super-heavy nuclei connected by chains of alpha and other radioactive particle decays.

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Section: Two-proton Decaymentioning

confidence: 78%

“…Detailed review of the experimental developments leading to the present status of proton radioactivity can be found in Refs. [29,30,31]. The first developments in the theoretical treatment of this subject has been reviewed in Refs.…”

Section: Systematic Studies Of Proton Radioactivity and Nuclear Struc...mentioning

confidence: 99%

Recent developments in radioactive charged-particle emissions and related phenomena

Liotta

Wyss

2019

Progress in Particle and Nuclear Physics

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“…Ground-state proton emission [6][7][8][9][10][11] was found in the early 1980s via the discovery of 151 Lu [12], shortly followed by the identification of 147 Tm [13] (T1 /2 = 0.58(3) s [14]). To date, approximately 50 [10] cases of proton emission are known between 108 I [5] and 185 Bi [15]; the only odd-Z element in between without observed proton emission is promethium.…”

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confidence: 99%

Probing triaxiality beyond the proton drip line: Spectroscopy of Tm147

Auranen¹,

Siwach²,

Arumugam³

et al. 2023

Phys. Rev. C

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Two triaxial states of the proton-decaying nucleus 147 Tm were studied via a comparison of experimental data to results obtained through nonadiabatic quasiparticle calculations. The experimental data were collected in a recoil-decay tagging study using the vacuum-mode recoil separator MARA coupled with the JUROGAM3 γ -ray spectrometer. The previously proposed level scheme above the triaxial 11 /2 − (π h11 /2 ) ground state was confirmed, and the level structure was expanded to cover the states above the weakly populated proton-emitting 5 /2 + (π d5 /2 ) isomeric state. It was found that the isomeric state is also triaxial, and possibly more deformed than the ground state.

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“…Detailed reviews of the experimental proton-emitter data can be found, for example, from Refs. [10][11][12][13][14].…”

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confidence: 99%

Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed Lu149

Auranen¹,

Briscoe²,

Ferreira³

et al. 2022

Phys. Rev. Lett.

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Using the fusion-evaporation reaction 96 Ruð 58 Ni; p4nÞ 149 Lu and the MARA vacuum-mode recoil separator, a new proton-emitting isotope 149 Lu has been identified. The measured decay Q value of 1920( 20) keV is the highest measured for a ground-state proton decay, and it naturally leads to the shortest directly measured half-life of 450 þ170 −100 ns for a ground-state proton emitter. The decay rate is consistent with l p ¼ 5 emission, suggesting a dominant πh 11=2 component for the wave function of the proton-emitting state.Through nonadiabatic quasiparticle calculations it was concluded that 149 Lu is the most oblate deformed proton emitter observed to date.

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Proton emission – new results and future prospects

Cited by 3 publications

References 42 publications

Recent developments in radioactive charged-particle emissions and related phenomena

Recent developments in radioactive charged-particle emissions and related phenomena

Probing triaxiality beyond the proton drip line: Spectroscopy of Tm147

Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed Lu149

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