Figure 1

Upper panel: Spectrum gated on the 221 keV transition. Lower panel: Spectrum gated on the 481 keV transition.Reuse & Permissions

Figure 2

Level scheme for positive parity states in ${}^{135}\mathrm{Ba}$ up through 910 keV with $B$($E2$) values (W.u.) (italics) and nominal γ-ray energies shown, obtained with data from the present work and the literature [10, 11, 12, 13]. The arrow widths are proportional to the $B$($E2$) values. The solid circles denote transitions confirmed from the coincidence spectra. The open circles are transitions not found in coincidence with any other γ-rays, suggesting ground state transitions. Literature δ values were used to deduce certain $B$($E2$) values. Some $B$($E2$) values (for the transitions $3/2_2^{+}$ and $3/2_3^{+}$ to $5/2_1^{+}$) are very large, suggesting the importance of further measurements of the δ values. Transitions with no $B$($E2$) values are indeterminant because of lack of δ values for multiple branches or because they cannot be an $E2$ transition ($1/2_2^{+}\to 1/2_1^{+}$).Reuse & Permissions

Figure 3

Comparison of the data for ${}^{135}\mathrm{Ba}$ with E(5/4), as well as IBFA and shell model calculations (see text for details). Numbers on the transitions are $B(E2)$ values in W.u. The triplets of numbers on two E(5/4) transitions refer to $B(E2)$ values to the $7/2_1^{+},5/2_1^{+}$ and $1/2_1^{+}$ states, respectively.Reuse & Permissions