Level structure of 140Nd.

Abstract

The structure of $^{140}\mathrm{Nd}$ has been studied via the $^{126}\mathrm{Te}$${(}^{18}$O,4n${)}^{140}$Nd and $^{128}\mathrm{Te}$${(}^{16}$O,4n${)}^{140}$Nd reactions at beam energies from 64 to 76 MeV and 72 to 76 MeV, respectively. In beam \ensuremath{\gamma}-ray spectroscopy techniques, including \ensuremath{\gamma}-ray excitation functions, \ensuremath{\gamma}-\ensuremath{\gamma} coincidences, and \ensuremath{\gamma}-ray angular distribution measurements, were used to construct a level scheme up to J=17 at an excitation energy of 6411 keV. Definite parity assignments were made up to the ${11}^{+}$ state. Two-particle configurations were calculated with a shell model and a modified surface delta interaction.