Ti46(He3, d)V47Reaction

Abstract

A high-resolution study of the ${\mathrm{Ti}}^{46}({\mathrm{He}}^3, d){\mathrm{V}}^{47}$ reaction has been made at a bombarding energy of 16.5 MeV. Fifty-three states were observed in ${\mathrm{V}}^{47}$ up to an excitation energy of 7 MeV, and deuteron angular distributions were measured between 7° and 60°. Orbital-angular-momentum transfers and spectroscopic factors have been evaluated for the more intense transitions with the aid of distorted-wave Born-approximation analysis. Of particular interest is the "anomalous" ${\frac{3}{2}}^{-}$ assignment for the ground state of ${\mathrm{V}}^{47}$. Other new spin-parity assignments for low-lying states in ${\mathrm{V}}^{47}$ are the following: 0.089 MeV, ${\frac{5}{2}}^{-}$; 0.147 MeV, ${\frac{7}{2}}^{-}$; 0.260 MeV, ${\frac{3}{2}}^{+}$, and 1.664 MeV, ${\mathrm{½}}^{+}$. The analog state to the 0.160-MeV (${\frac{7}{2}}^{-}$) level in ${\mathrm{Ti}}^{47}$ was located at 4.30-MeV excitation energy, which corresponds to a Coulomb displacement energy of $\Delta E_c=7.84\mathrm{}\pm 0.02$ MeV for the ${\mathrm{V}}^{47}$-${\mathrm{Ti}}^{47}$ isobaric pair. Evidence for possible deformation in ${\mathrm{V}}^{47}$ is discussed.