Abstract
Fluorine and carbon induced fusion-evaporation reactions were used to excite high-spin states in 79Rb and 79Kr. The level scheme of 79Rb was established on the basis of neutron multiplicity measurements, γγ coincidence data and excitation functions. From recoil distance and Doppler shift attenuation lifetime measurements, E2 strengths of the positive-parity yrast states in 79 Kr ( up to I π = 21 2 + ) and the favored and unfavored states in 79 Rb ( up to I π = 25 2 + ) were derived. An interpretation of these data in terms of the asymmetric rotor-plus-particle model and the interacting boson fermion model (with or without separate proton and neutron bosons) is proposed. Energies and lifetimes of a second stretched band in 79Rb (probably with negative parity) were also measured.
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