Investigation of octupole vibrational states in 150Nd via inelastic proton scattering (p,p'g)

Abstract

Octupole vibrational states were studied in the nucleus ${}^{150}\mathrm{Nd}$ via inelastic proton scattering with $\unit[10.9]{MeV}$ protons which are an excellent probe to excite natural parity states. For the first time in ${}^{150}\mathrm{Nd}$, 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 (IBA) calculations performed in the (spdf) boson space. The calculations are found to be in good agreement with the experimental data, both for positive and negative-parity states.

References in corpus (2)

• Nuclear collective motion with a coherent coupling interaction between quadrupole and octupole modes
• Description of nuclear octupole and quadrupole deformation close to the axial symmetry: Octupole vibrations in the X(5) nuclei 150Nd and 152Sm

Cited by in corpus (4)

• Mixed-symmetry octupole and hexadecapole excitations in the N=52 isotones
• Role of p-induced population of medium mass(A $\sim$ 150) neutron rich nuclei
• Simultaneous description of low-lying positive and negative parity bands in heavy even-even nuclei
• Parity-doublet bands in the odd-\bm{$A$} isotones \element{237}U and \element{239}Pu by a particle-number-conserving method based on the cranked shell model