The β2p decay mechanism of Ar

Nuclear structure of30S and its implications for nucleosynthesis in classical novae

“…2) is in good agreement with that of the 5945-keV tentative level observed in Ref. [18]. The former state is observed in the present work with a statistical significance of one standard deviation at 10 • and 20 • above the background expectations.…”

“…On the other hand, the weighted average energy between the tentative results of Ref. [18] and our 32 S(p,t) 30 S measurements for the corresponding state in 30 S is [5946(3)] keV. Therefore, we concluded that this latter state is most likely the mirror to the 4 + 2 state in 30 Si at 5950.73 (15) keV.…”

“…Hence, we have tentatively assigned the 5847-keV state to be the 2 + 4 state in 30 S. The [5946]-keV state has only been tentatively observed in the measurement of Ref. [18] and in our 32 S(p,t) 30 S measurements. However, the data obtained in these measurements were not enough to assign a conclusive J π value to this state.…”

“…Such large uncertainties in the resonance energies, E r , resulted in an uncertainty in the rate which spanned ∼4 orders of magnitude [9]. Prior to this prediction, several experiments had been performed to study the structure of 30 S [14][15][16][17][18]. However, the two astrophysically important states predicted by Iliadis et al [9] were not observed in any of the previous experiments.…”

Breakup channels forC12triple-αcontinuum states

“…The plots are scatter plots of the deduced 12 C energy versus the three individual α-particle energies as used previously in the analysis of β-delayed 2p decay data in Ref. [29]. In these plots, a single event yields three dots on a horizontal line.…”