Theoretical Calculation of the Low-Energy Enhancement in the Magnetic Dipole Radiation of Odd-Mass Lanthanide Nuclei

The authors compute the magnetic dipole (M1) γ-ray strength functions for odd-mass neodymium and samarium isotopes using the shell-model Monte Carlo method. They identify a low-energy enhancement (LEE) in the M1 γ-ray strength functions of these nuclei, which was recently observed experimentally in some of them.