engleski

Interplay between single-particle and collective excitations in argon isotopes populated by transfer reactions

New gamma transitions have been identified in argon isotopes in 40Ar+208Pb multiple transfer reactions by exploiting, in a fragment-gamma measurement, the new generation of magnetic spectrometers based on trajectory reconstruction coupled to large gamma arrays. The coupling of single particle degrees of freedom to nuclear vibration quanta has been discussed. The interpretation of the newly observed states within a particle-phonon coupling picture has been used to consistently follow, via their excitation energies, the evolution of collectivity in odd Ar isotopes. The proposed level schemes are supported by the results of sd-pf shell-model calculations, which have been also employed to evaluate the strength functions of the populated states.

heavy ion transefr reactions ; argon isotopes ; nuclear structure

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