Levels of the nucleus Sm150 excited in the (n, γ) reaction

Investigation of discrete states and quasidiscrete structures observed in Sm150 and Sm152 using the Humby1, Simón2, Beausang3 et al. 2016Phys. Rev. C6030View full textAdd to dashboardCite

“…The triton energy spectra gated on these two γ rays are shown in Figure 9 where the level energy obtained by summing the γ-ray energies with the NNDC energies of the lower lying levels is indicated by the blue dashed line. The level at 2587.2(4) keV A new 1813.8(4) keV γ-ray transition is observed between the level at 2587.2(4) keV and the 4 + 1 state, consistent with the previous measurements of the energy of this level [22,23]. This level is likely to be a 4 + state based on the previous 3 + ,4 + assignment from reference [23] and the natural parity selection rule in the (p,t) reaction.…”

“…It is possible that this is the NNDC level at 2655(7) keV [8,22,24,25]. A spin and parity of 3 (+) ,5 (+) was previously assigned to this level [25], suggesting that the level is a 3 − state based on the transition to the 2 + 1 state and the natural parity selection rule.…”

PrimaryE2 transitions observed following neutron capture for the mass region 144?A?180

“…[261 for natural Er, and is higher than the value of 5.9 given by Groshev [27]. In the case 0f the ~73Yb(n,?…”

Two-quasiparticle states in 168Er

“…Some authors 5,26,28) have interpreted the 1094 keV state as the proton configuration [523i+411tJpp-Quite apart from the fact that the assumption of a proton level is in contradiction to the above arguments, the presence of a strang MI transition between the first 16 8 Er based on the present research. Energies are quoted in keV.…”