Energy Levels inCa42andCa44

Abstract

The ${\mathrm{K}}^{39}(\alpha , p){\mathrm{Ca}}^{42}$, ${\mathrm{K}}^{41}(\alpha , p){\mathrm{Ca}}^{44}$, and ${\mathrm{Ca}}^{43}(d, p){\mathrm{Ca}}^{44}$ reactions were studied and ground state $Q$-values of -0.19, 0.98, and 9.07 Mev respectively were found. Energy levels in ${\mathrm{Ca}}^{42}$ were found at 1.51, 1.95, 2.29, 2.59, and 3.02 Mev and in ${\mathrm{Ca}}^{44}$ at 1.13, 1.92, 2.28, 2.58, 2.97, and 3.17 Mev. An anomalously low cross section was observed for the ${\mathrm{Ca}}^{43}(d, p){\mathrm{Ca}}^{44}$ reaction.