Masses of proton-rich Tz &lt; 0 nuclei via the isobaric mass equation

Pape, A.; Antony, M. S.

doi:10.1016/0092-640x(88)90020-4

Cited by 27 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3) is found at S p =1.54 MeV corresponding to ∆M=25.30 (2) MeV. This value is compatible with predictions based on mass measurement [13,14,15] but above the second peak value from ref [4]. From its mirror nucleus 18 N spectroscopic information [9] (see Fig.…”

Section: Level Scheme Of 18 Nasupporting

confidence: 88%

Spectroscopy of the unbound nucleus [sup 18]Na in link with [sup 19]Mg two-proton radioactivity

Assié

Oliveira

2011

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

Section: Level Scheme Of 18 Nasupporting

confidence: 88%

Spectroscopy of the unbound nucleus [sup 18]Na in link with [sup 19]Mg two-proton radioactivity

Assié

Oliveira

2011

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…1. The theoretical predictions of Q 2p values from different local-mass models [19][20][21][22][23] for the nuclei ranging from 45 Fe to 67 Kr are compared to experimental results where known. The experimental value for 67 Kr comes from the present Letter.…”

mentioning

confidence: 99%

“…From mass and Q value predictions [19][20][21][22][23] from "local" mass models, it was shown that 59 Ge, 63 Se, and 67 Kr would be the next candidates for 2p radioactivity. Although the theoretical error bars were quite large (more than 200 keV for some of them, corresponding to a difference of about 2 orders of magnitude in Coulomb barrier penetration half-life), it was clear that 67 Kr would probably be the best candidate for 2p radioactivity (see Fig.…”

mentioning

confidence: 99%

Two-Proton Radioactivity ofKr67

Goigoux¹,

Ascher²,

Blank³

et al. 2016

Phys. Rev. Lett.

View full text Add to dashboard Cite

In an experiment with the BigRIPS separator at the RIKEN Nishina Center, we observed two-proton (2p) emission from 67 Kr. At the same time, no evidence for 2p emission of 59 Ge and 63 Se, two other potential candidates for this exotic radioactivity, could be observed. This observation is in line with Q value predictions which pointed to 67 Kr as being the best new candidate among the three for two-proton radioactivity. 67 Kr is only the fourth 2p ground-state emitter to be observed with a half-life of the order of a few milliseconds. The decay energy was determined to be 1690(17) keV, the 2p emission branching ratio is 37(14)%, and the half-life of 67 Kr is 7.4(30) ms. DOI: 10.1103/PhysRevLett.117.162501 Close to the valley of β stability, nuclear β decay, which is often associated with γ-ray emission, is the only decay mode possible. When moving closer to the limits of stability in both directions, the available decay energy, the Q value, increases at the same time as the binding energy of the excess particle decreases. Therefore, emission of β-delayed particles (protons, neutrons, or α particles) becomes more and more likely. Close to the proton drip line, β-delayed one-, two-, and (in particular recently) three-proton emission has been observed [1][2][3][4][5][6].In all these cases, the excess protons are still sufficiently bound that direct particle emission is not possible.However, when moving further away from the line of stability, the protons are no longer bound by the strong nuclear force and the proton drip line is crossed. For slightly negative proton separation energies S p or S 2p , β þ decay can still compete with direct one-or two-proton emission; however, with separation energies typically below −1 MeV, one-and two-proton emission dominates for odd-and even-Z elements, respectively. We underline here that for 2p radioactivity, the one-proton separation energy has to be positive.For odd-proton-number (odd-Z) elements, one-proton radioactivity is a well-established decay mode and is PRL 117,

show abstract

“…of 18 Na. These two results are summarized in Table II, along with a recent experimental result [8] and other predictions [5,9,10]. If weak coupling misses 18 Na by about the same amount as in 18 N, we would thus expect the mass excess of 18 Na to be in the range 25.01-25.25 MeV.…”

mentioning

confidence: 66%