Lifetimes of levels inF20

Direct Measurement of the Key Ec.m.=456 keV Resonance in the Astrophysical Wilkinson1, Lotay2, Lennarz3 et al. 2017Phys. Rev. Lett.

“…or better. Moreover, it is interesting to note that an early resonance strength estimate by Görres et al [29] based on 20 F lifetimes, in which the proton widths used are adopted from Brown et al [30], and similar to those of Belarge et al [22], is also in agreement with the present work. As such, a possible explanation for the considerable discrepancy in resonance strength between the current study and Ref.…”

New direct study of theNe19(p,γ)Na20Couder1, Angulo2, Casarejos3 et al. 2004Phys. Rev. C212311View full textAdd to dashboardCite

“…Finally, Brown et al [12] suggested the 2.643 MeV level to be the analog of the 2.966 MeV 3 + state in 20 F; from the shellmodel-calculated lifetime ͑͒ of 3.5 fs for the mirror level, they obtained a resonance strength of 80 meV for the 2.643 MeV state. Adopting the most recent experimental result, i.e., ഛ 12 fs [13], a lower limit of 16 meV was deduced for the resonance strength [14].…”

Beta-decay study of $T_z=-2$ proton-rich nucleus $^{20}$Mg

“…The resonance energy was well-known but only an upper limit of the resonance strength was obtained. A series of exper-imental and theoretical studies through the 20 Ne( 3 He, t) 20 Na charge exchange reaction [7][8][9][10][11][12][13][14][15][16], the 20 Ne(p, γ) 20 Na reaction with radioactive 19 Ne beams via inverse-kinematics method [17][18][19][20][21][22][23][24], shell-model calculations [25,26], and various other approaches [27][28][29] have been conducted. However, the spin and parity assignment of the state is unsettled even after these extensive investigations.…”