Lifetime of the 1.04 MeV state in F18

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ID: 111682
1980
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Abstract
The lifetime of the 1.04 MeV (${J}^{\ensuremath{\pi}}={0}^{+}$, $T=1$) state in $^{18}\mathrm{F}$ has been measured to be ${2.7}_{\ensuremath{-}0.4}^{+0.6}$ fs using the Doppler shift attenuation method through the $^{18}\mathrm{O}(p, n)^{18}\mathrm{F}$ reaction. An $^{18}\mathrm{O}$ target implanted into Ta was used in the measurement. Experimental correction factors for the nuclear and electronic stopping powers were used in the deduction of the lifetime. Based on the revised lifetime, the predicted circular polarization ${P}_{\ensuremath{\gamma}}(1.08 \mathrm{MeV})$ of the transition 1.08 MeV (${0}^{\ensuremath{-}}$,0) \ensuremath{\rightarrow} 0 MeV (${1}^{+}$,0) is related to the parity nonconserving matrix element $〈1.04({0}^{+}, 1)|{V}^{\mathrm{PNC}}|1.08({0}^{\ensuremath{-}}, 0)〉$ by ${P}_{\ensuremath{\gamma}}(1.08 \mathrm{MeV})=\ifmmode\pm\else\textpm\fi{}({5.8}_{\ensuremath{-}0.7}^{+0.5})\ifmmode\times\else\texttimes\fi{}{10}^{13} \mathrm{Me}{\mathrm{V}}^{\ensuremath{-}1}〈1.04({0}^{+}, 1)|{V}^{\mathrm{PNC}}|1.08({0}^{\ensuremath{-}}, 0)〉$.NUCLEAR REACTIONS $^{18}\mathrm{O}(p, n)^{18}\mathrm{F}$, $E=3.75$ MeV; measured Doppler-shift attenuation, $^{18}\mathrm{F}$ 1042-keV level; deduced ${\ensuremath{\tau}}_{m}$. Implanted target.
Reference Key
keinonen1980physicallifetime Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors J. Keinonen;H. -B. Mak;P. Skensved;J. R. Leslie;W. McLatchie;
Journal physical review c
Year 1980
DOI
doi:10.1103/PhysRevC.22.351
URL
https://doi.org/10.1103/physrevc.22.351
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