Figure 1

Coincidence spectra double-gated on (a) 814.7 and 977.5 keV transitions in ${}^{96}\mathrm{Sr}$ and (b) 814.3- and 859.1-keV transitions in ${}^{92}\mathrm{Sr}$. Note new transitions of energies 60.0, 77.8, 97.9, 208.8, 278.7, 347.3, and 414.2 keV in the upper spectrum and energies 109.6 and 273.0 keV in the lower spectrum. The xn labels indicate transitions from the Nd nucleus corresponding to the xn channel. Also, not all peaks could be assigned to a nucleus. The high-energy part of these spectra have been truncated to expand the region of interest and show primarily coincident γ rays from the corresponding Sr isotopes.Reuse & Permissions

Figure 2

Coincidence spectra double-gated on several transitions in ${}^{152,153,154,155,156}$Nd [3, 9]. The xn labels indicate transitions from the Sr nucleus corresponding to the xn channel.Reuse & Permissions

Figure 3

Coincidence spectra double-gated on the 271.6- and 339.6-keV transitions in ${}^{153}\mathrm{Nd}$ and the 273.0 and 341.0 keV transitions in ${}^{155}\mathrm{Nd}$.Reuse & Permissions

Figure 4

Coincidence spectrum double-gated on the 278.7- and 347.3-keV transitions in ${}^{153}\mathrm{Nd}$. See Fig. 2d for the high-energy part of the coincidence spectrum in ${}^{153}\mathrm{Nd}$. Background peaks (BG) come from the coincidence gates on the 278.0-keV (${}^{102}\mathrm{Nb}$) and 346.2-keV (${}^{147}\mathrm{La}$) transitions.Reuse & Permissions

Figure 5

New rotational band in ${}^{153}\mathrm{Nd}$.Reuse & Permissions

Figure 6

Comparison of $E(I\to I-1$) energies in ${}^{155}\mathrm{Sm}$ [7] and ${}^{153}\mathrm{Nd}$.Reuse & Permissions

Figure 7

Coincidence spectra double-gated on transitions in ${}^{154,155}\mathrm{Nd}$ and ${}^{92,96}\mathrm{Sr}$.Reuse & Permissions

Figure 8

Coincidence spectrum double-gated on the 273.0- and 341.0-keV transitions in ${}^{155}\mathrm{Nd}$. This spectrum shows the new transitions of energies 59.8, 76.0, 94.9, 109.6, and 204.5 keV. Two very weak new transitions of energies 135.8 and 170.9 keV are not clear but are marked at the energies of the crossing-over transitions.Reuse & Permissions

Figure 9

New rotational band in ${}^{155}\mathrm{Nd}$. All transitions are new.Reuse & Permissions