摘要
The neutron-rich isotopes with N 40 below 68Ni, in many ways behave similar to the “island of inversion” nuclei with N 20. We report on the measurements of excited states of 63;65;67Mn via in-beam -ray spectroscopy. The experiment was performed at the Radioactive Isotope Beam Factory, RIKEN. Analysis of data for 63;65;67Mn obtained in the SEASTAR campaign has been done. A few transitions have been identified in each of them providing a chance to study the systematic structure evolution of n-rich Mn isotopes near N 40.