Abstract
Octupole vibrational states were studied in the nucleus Nd-150 via
inelastic proton scattering with 10.9-MeV protons, which are an
excellent probe to excite natural parity states. For the first time in
Nd-150, both the scattered protons and the gamma rays were detected in
coincidence, giving the possibility to measure branching ratios in
detail. Using the coincidence technique, the B(E1) ratios of the
decaying transitions for 10 octupole vibrational states and other
negative-parity states to the yrast band were determined and compared to
the Alaga rule. The positive and negative-parity states revealed by this
experiment are compared with interacting boson approximation
calculations performed in the spdf boson space. The calculations are
found to be in good agreement with the experimental data, for both
positive and negative-parity states.
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