The Level Structure of ⁶⁹Ge

Abstract

The level structure of 69 Ge has been investigated by observing both de-excitation gamma rays and conversion electrons following the 69 Ga( p , n ) 69 Ge reaction at the proton energies between 3.4 and 5.0 MeV. By the analysis of the measured excitation functions of de-excitation gamma rays, twenty-two excited levels of 69 Ge have been found up to 1.8 MeV in the excitation energy. From the branching ratios of the gamma rays and the conversion coefficients, multipolarities of some of the transitions and spins of five low-lying levels were determined.