Proton single-particle strength in19Fmeasured via the18O(d,n)reaction

Proton single-particle strengths in ${}^{19}\\mathrm{F}$ were investigated up to an excitation energy of 14 MeV through the $(d,n)$ reaction on ${}^{18}\\mathrm{O}$ at ${E}_{d}=25$ MeV. Spectroscopic strengths were deduced from adiabatic-deuteron-breakup-approximation analysis. Most of the strengths for the $2s1d$-shell orbitals were observed in the present measurement. Strength distributions were compared with the shell-model predictions in the framework of the complete $2s1d$-shell basis. Results for the ${1d}_{5/2}$ and ${2s}_{1/2}$ strengths were in good agreement with the shell-model calculation, but the theoretical estimate for the ${1d}_{3/2}$ strength did not reproduce the observation. The occupation probabilities and single-particle energies of proton orbitals near the Fermi surface for ${}^{18}\\mathrm{O}$ were evaluated from a combined analysis of the present stripping data and previous proton pickup data.