Indirect Mass Determination For The Neutron-Deficient Nuclides V-44, Mn-48, Co-52 And Cu-56

Mass excess values for V-44, Co-52 and Cu-56 are derived indirectly using the mirror symmetry and known data from beta-delayed proton spectroscopy. The new mass excess obtained by using the energy conservation for Mn-48 is -29 303(14) keV, which is an improvement by about an order of magnitude compared to the AME'12 value. Compared to previously known data, the new proton separation energy for Cr-45 causes a similar to 3.5 times smaller matter flow through the Ca-Sc cycle during the rp-process. Obtained proton separation energies for Co-52 and Cu-56 are about 500 keV larger than the AME'12 values. If confirmed, this would affect photo disintegration rates of Co-52 (gamma, rho) Fe-51 and Cu-56 (gamma, rho) Ni-55 reactions during the rp-process in X-ray bursts. (C) 2015 Elsevier B.V. All rights reserved.