STRUCTURE OF AS-72 NUCLEUS

gamma-ray, internal conversion electron and gamma gamma-coincidence sp ectra of the Ge-72(p,n gamma)As-72 reaction were measured with Ge(HP) gamma and superconducting magnetic lens plus Si(Li) electron spectrome ters at eight bombarding proton energies between 5.75 and 6.51 MeV, En ergies and relative intensities of 123 (among them 58 new) As-72 gamma -rays, as well as 51 (including 38 new) internal conversion coefficien ts have been determined. A more complete level scheme, gamma-ray branc hing ratios, level spin and parity values have been deduced. The energ y spectra and electromagnetic properties were calculated using the int eracting boson-fermion-fermion model. The calculations reasonably well describe the level spectra and electromagnetic properties of As-72 nu cleus.