Excited States inMn56

Abstract

An electrostatic accelerator and a broad-range magnetic spectrograph were employed to investigate the excited states of ${\mathrm{Mn}}^{56}$ by means of the ${\mathrm{Mn}}^{55}(d, p){\mathrm{Mn}}^{56}$ reaction. The proton groups from thin manganese targets were observed at 10, 30, and 60 degrees with an incident deuteron energy of 7.0 Mev and at 20 degrees with 6.6-Mev deuterons. In the region of excitation in ${\mathrm{Mn}}^{56}$ up to 7 Mev, 124 excited states were found. The ground-state $Q$-value for the reaction is 5.047±0.005 Mev, and the first excited state is at 0.025±0.004 Mev.