High-Resolution Study ofCa48(p,t)Ca46atEp=39MeV

The ${}_{}{}^{46}{}_{}{}^{}\mathrm{Ca}$ nucleus was studied using the ($p,t$) reaction. A number of spin-parity assignments are clarified for the low-lying states. Many new energy levels are reported up to an excitation energy of 6.3 MeV including an additional $0^{+}$ state at 4.76 MeV. Distorted-wave calculations with $f-p$ shell wave functions give reasonable agreement for the first $0^{+}$, $2^{+}$, $4^{+}$, and $6^{+}$ states and for two weak $0^{+}$ states near 5.5 MeV which were strongly excited in the ${}_{}{}^{44}{}_{}{}^{}\mathrm{Ca}\mathrm{}(t,p)\mathrm{}$ reaction.