Nuclear Data Sheets for A = 61

Abstract

The evaluated spectroscopic data are presented for known nuclides of mass 61 (Sc,Ti,V,Cr,Mn,Fe,Co,Ni, Cu,Zn,Ga,Ge). Excited-state data are nonexistent for 61Sc, 61Ti, 61V, and 61Ge. Significant amounts of new data have been added since the previous NDS evaluation of A=61 nuclides (1999Bh04). 61Sc nuclide is now experimentally known, but without any knowledge of its half-life. The ground state half-lives of 61Ti and 61V are now determined. Excited-state data have become available for 61Cr, 61Mn and 61Ga, while for 61Ge, five excited states were erroneously assigned in the previous evaluation, these have been omitted here. Improved and extensive high-spin excitations are available for 61Fe, 61Cu and 61Zn, including several new superdeformed structures in 61Cu and 61Zn. Thermal neutron capture γ-ray data are available in detail from 2004Ra23. The radioactive decay schemes of 61Sc and 61Ti are not known, while those for 61V, 61Fe and 61Ge are poorly known. This work benefited from the earlier full evaluations of A=61 published by 1999Bh04, 1983Ek01 and 1975Au05 and the one published in an ‘update’ mode by 1992Zh31. The data and conclusions presented in the current work supersede those in all the previous evaluations.