Figure 1

Proposed partial level scheme of ${}^{62}\mathrm{Ga}$. The energy labels are given in keV. The widths of the arrows are proportional to the relative intensities of the $\gamma$ rays. Tentative transitions are dashed. On the right hand side the yrast $0^{+},2^{+},4^{+}$, and $6^{+}$ states of ${}^{62}\mathrm{Zn}$ [16] are shown.Reuse & Permissions

Figure 2

$\gamma$-ray spectra resulting from a $\gamma \gamma \gamma$ analysis. All spectra are gated with zero $\alpha$ particles and zero or one proton detected in ISIS and any number of neutrons. The peaks are labeled with their energies in keV. Panel (a) is in double coincidence with the 246 or $571\text{keV}$ transition and the $622\text{keV}\left(5_2^{+}\right)\to 3^{+}$ line. Panel (b) is in coincidence with any combination of the 246, 376, or $571\text{keV}$ line. Panel (c) is in double coincidence with the 246, 376, or $571\text{keV}$ transition and the $1488\text{keV}$ $8^{+}\to 7^{+}$ line. Panel (d) is in double coincidence with the 246 or $571\text{keV}$ transition and the $1417\text{keV}$ line feeding the $817\text{keV}$ $3^{+}$ state.Reuse & Permissions

Figure 3

$\gamma$-ray spectra resulting from a $\gamma \gamma$ analysis. The spectra plotted in black are gated with zero $\alpha$ particles and zero or one proton detected in ISIS and any number of neutrons. The gray spectrum in panel (b) is in additional coincidence with an $\alpha$ particle. Panel (a) is in coincidence with the $571\text{keV}$ ground-state transition of ${}^{62}\mathrm{Ga}$. Peaks labeled with their energies in keV belong to ${}^{62}\mathrm{Ga}$, and peaks labeled with a “$+$” originate from ${}^{34}\mathrm{Cl}$ [22], which are due to reactions on ${}^{12}\mathrm{C}$. Panel (b) is in coincidence with the $446\text{keV}$ line. The intense peaks in these spectra are from coincidences with the $444\text{keV}$ ground-state transition in ${}^{58}\mathrm{Cu}$, which is formed via the $1\alpha 1p1n$ reaction channel. Note that the $571\text{keV}$ line is absent in the gray spectrum, and that neither 246 nor the $376\text{keV}$ transitions are visible.Reuse & Permissions

Figure 4

Time spectra of the 246 (a) and $571\text{keV}$ (b) transitions, which are situated below the previously known isomeric $3^{+}$ state at $817\text{keV}$. The spectra are gated with zero $\alpha$ particles and zero or one proton detected in ISIS, and they are in coincidence with the $376\text{keV}$ $5^{+}\to 3^{+}$ transition. The light gray curves represent the prompt time distributions at the respective $\gamma$-ray energy, and the dark gray curves the result of least squares fits to the data.Reuse & Permissions

Figure 5

Comparison of the experimental (exp) and predicted (th) level energies in ${}^{62}\mathrm{Ga}$ for the odd-spin $T=0$ sequence (left), the possible $T=1$ sequence (middle), and the nonyrast states (right). For completeness, the ground-state band of ${}^{62}\mathrm{Zn}$ is included in the middle part. The predicted level energies have been adjusted according to a binding energy shift of $\text{BES}=-15\text{keV}$ derived from the ground state and the odd-spin $T=0$ states.Reuse & Permissions