Figure 1

(a) Spectrum produced by gating on the 492-keV transition in the GS data, showing coincidences with transitions deexciting levels located above the 492-keV state; (b) spectrum produced by gating on the 419-keV transition in the GS data, where both the 332- and 492-keV $\gamma$ rays, assigned to depopulate the level at 492-keV, are seen; (c) spectrum recorded by GS in coincidence with mass $A=77$ detected at the focal plane of the FMA; (d) spectrum produced by gating on the 767-keV transition in the GS data, showing the transitions depopulating the 619-keV state. In all spectra, peaks are labeled according to their energy to the nearest keV; those marked with a ▴ are from known contaminants.Reuse & Permissions

Figure 2

Angular distributions for $\gamma$-ray transitions in ${}^{77}\mathrm{Ge}$, labeled by their energy to the nearest keV, that are relevant to the discussion. The fitted lines are theoretical curves (for fully aligned states) based on the assigned multipolarities of Table . Mixing ratios of $\delta ~0.0,-0.1,0.2$, and $-0.55$ were obtained by fitting the 256-, 421-, 536-, and 761-keV mixed $M1/E2$ transitions, respectively. The error bars represent the statistical uncertainty.Reuse & Permissions

Figure 3

Partial level scheme of ${}^{77}\mathrm{Ge}$ deduced from the $\gamma \text{−}\gamma$ coincidence data (with the exception of the 884-keV state, seen only in the recoil-$\gamma$ coincidence data). Levels are labeled by their spin and parity. Energies of the levels and transitions are given to the nearest keV. The thickness of the arrows is in proportion to the intensity of the transition.Reuse & Permissions