Level Structure ofAr37from theAr36(d, p)Ar37Reaction

The level structure of ${\mathrm{Ar}}^{37}$ has been investigated by bombarding ${\mathrm{Ar}}^{36}$ gas enriched >99% with 15-MeV deuterons. Nineteen energy levels up to an excitation energy of 6.5 MeV were found. For eight of the levels angular distributions up to 145° were taken and $l_n$ value and spectroscopic factors were determined. The 1.60-MeV level was found to be populated via $l_n=3\mathrm{}$ transition and the 2.50-, 3.55-, 4.49-, and 5.18-MeV levels via $l_n=1\mathrm{}$. From the $j$ dependence of the $l_n=1\mathrm{}$ distributions, the spin values of these states were determined. The mean energies of the shell-model configurations were $1f_{\frac{7}{2}}$, 1.60 MeV; $2p_{\frac{3}{2}}$, 2.95 MeV; and $2p_{\frac{1}{2}}$, 5.04 MeV. The rate of change of the binding energy and the symmetry energy is discussed by comparing these results to the ${\mathrm{Ar}}^{41}$ energy spectrum.