The level structure of¹⁵⁵Gd from (n, γ), (d,p) and (d,t) studies

Blocking of coupling to the 02 + excitation in 154Gd by the [505]11/2- neutron in 155Gd

“…In fig. 1 we show the results of Schmidt et al [21] for 155 Gd. They carried out an extensive investigation of the low-spin levels using the (n,γ), ( core excitation at 681 keV in 154 Gd, to have their bandhead energies at 592 keV and 815 keV, respectively.…”

“…The data for the K ≤ 5/2 orbitals are taken from ref. [21] and the data for the [505]11/2 − orbital are from the present experiment.…”

Mass measurements on stable nuclides in the rare-earth region with the Penning-trap mass spectrometer TRIGA-TRAP

“…We would like to emphasize that the mass measurements reported here provide the first direct links between the nuclides under investigation and the atomicmass standard 12 C. Moreover, the present AME-2003 values are tested independently from (n, γ) studies, which is certainly needed as the example of 32 Si shows. Here, a 4 σ deviation of the mass value determined by a chain of (n, γ) reactions starting with 28 Si to the direct mass measurement has been discovered [24].…”

“…The masses of the isotopes 154−158 Gd in the AME 2003 have also been mainly determined by (n, γ) measurements [27,[29][30][31][32][33][34] and show discrepancies of 3-4 σ (standard deviations) to the TRIGA-TRAP results (see Fig. 3).…”

Spectroscopy ofGd153andGd157using theRoss1, Hughes2, Allmond3 et al. 2014Phys. Rev. C

“…10) have been positively assigned. One is based on the negative parity 155 Gd, a level was assigned this configuration based upon a combination of new [12] and old [41] data. Experiments to unequivocally locate this configuration in these nuclei, (by imparting slightly higher spin than the (p,d) reaction does), would be beneficial to the following interpretation.…”