In this review, we describe the experimental facilities and methods which make it possible to
produce and measure the properties of the extreme neutron-rich nuclei. We then develop …

We study the development of collectivity in the neutron-rich nuclei around N= 40, where the
experimental and theoretical evidence suggest a rapid shape change from the spherical to …

Large-scale shell-model calculations predict that the region of deformation which comprises
the heaviest chromium and iron isotopes at and beyond N= 40 will merge with a new one at …

Abstract The National Superconducting Cyclotron Laboratory (NSCL) at Michigan State
University (MSU) is a scientific user facility that offers beams of rare isotopes at a wide range …

We report on the measurement of the first 2+ and 4+ states of Cr 66 and Fe 70, 72 via in-
beam γ-ray spectroscopy. The nuclei of interest were produced by (p, 2 p) reactions at …

Intermediate-energy Coulomb excitation measurements are performed on the N≥ 40
neutron-rich nuclei Fe 66, 68 and Cr 64. The reduced transition matrix elements providing a …

The transition rates for the 2 1+ states in Fe 62, 64, 66 were studied using the recoil distance
Doppler-shift technique applied to projectile Coulomb excitation reactions. The deduced E 2 …

The internal-conversion and internal-pair-production decays of the first excited 0+ state in Ni
68 are studied following the β decay of Co 68. A novel experimental technique, in which the …

Shapes and shape evolution in the mass-130 region, including the Te, Xe, and Ba isotopes,
have long been a focus of discussion in nuclear physics. This mass region consists of …

γ-Ray spectroscopy continues to be an important tool for the study of nuclei. Excitation
energies can be measured directly and in model-independent ways, and thus are among …