Structure of the neutron mid-shell nuclei ${}^{111,113}\mathrm{Ag}_{64,66}$

${}^{111}\mathrm{Ag}$ and ${}^{113}\mathrm{Ag}$ were produced in induced fission reaction, where yrast and near-yrast states were populated. To interpret the new data the Interacting Boson-Fermion Model was used. A good agreement with the experimental data is achieved, suggesting that the two Ag nuclei have a well-developed collectivity, superimposed on $\pi g_{9/2}^{-3}$ excitations previously observed throughout the entire isotopic chain.

Figure 1

${}^{111}\mathrm{Ag}$ partial level scheme.

Figure 2

Sample coincidence spectra for ${}^{111}\mathrm{Ag}$, gated on 356-keV $\gamma$ ray in ${}^{83}\mathrm{Br}$ and 694-keV $\gamma$ ray in ${}^{111}\mathrm{Ag}$ (a), and on 694- and 841-keV $\gamma$ rays (b), and 290- and 159-keV $\gamma$ rays (c), respectively.

Figure 3

Sample coincidence spectra for ${}^{113}\mathrm{Ag}$, representing the $95\gamma \text{−}631\gamma$ (a), $95\gamma \text{−}765\gamma$ (b), $95\gamma \text{−}872\gamma$ (c), and $202\gamma \text{−}201\gamma$ coincidences (d).

Figure 4

${}^{113}\mathrm{Ag}$ partial level scheme.

Figure 5

Theoretical and experimental partial level schemes of ${}^{112,114}\mathrm{Cd}$. The experimental data are taken from [38].

Figure 6

Partial experimental and theoretical levels in ${}^{111,113}\mathrm{Ag}$. Each sequence of states has the same leading single-particle component obtained from the IBFM-1 calculations. The model calculations provide information about many other states. A good agreement with the experimental counterparts of those states was observed.