Nuclear Data Sheets for A = 77

The experimental nuclear spectroscopic data for known nuclides of mass number 77 (Ni, Cu, Zn, Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y) have been evaluated and presented together with adopted properties for levels and γ rays. New high-spin data are available for 77Ga, 77Br and 77Kr. New precise single-particle transfer cross section data are available for 77Ge, 77As, 77Se and 77Br from eight different reactions (2009Ka06,2008Sc03); these data give information for occupancy of valence neutron orbitals in the ground states of target nuclides: 76Ge, 76Se and 78Se. No significant new data since the 1997 NDS for A = 77 (1997Fa12) have been reported for 77Rb and 77Sr. No data are yet available for excited states in 77Ni, 77Cu and 77Y. Level schemes from the radioactive decays of 77Ni to 77Cu and 77Y to 77Sr are unknown, while those for the decays of 77Cu to 77Zn and 77Ga to 77Ge are incomplete. Detailed gamma-ray data for 77Ge from thermal-neutron capture in 76Ge, together with extensive gamma-ray data from 77Ge decay to 77As have become available from 2012Me04. This work benefited from earlier evaluations (1997Fa12,1989Fa07,1980Si05,1973Ur02) of A = 77 nuclides, however, the data presented here supersede those in above evaluations.