The structure of the 147Eu nucleus has been studied via the 124Sn(28Si,p4n) fusion-evaporation reaction at 125 MeV beam energy. The yrast level scheme has been extended up to 10 MeV and spin near 55/2. Up to the highest spins the levels are interpreted in terms of specific multinucleon excitations involving up to seven quasiparticles. Parameter free shell model calculations for three or five nucleons, or for three nucleons and an octupole phonon, are in good agreement with experiment for all the states observed here below 4.2 MeV, and also with the above-yrast levels known from earlier (p,2n) experiments.
Shell model and octupole excitations in 147Eu
LUNARDI, SANTO;
2001
Abstract
The structure of the 147Eu nucleus has been studied via the 124Sn(28Si,p4n) fusion-evaporation reaction at 125 MeV beam energy. The yrast level scheme has been extended up to 10 MeV and spin near 55/2. Up to the highest spins the levels are interpreted in terms of specific multinucleon excitations involving up to seven quasiparticles. Parameter free shell model calculations for three or five nucleons, or for three nucleons and an octupole phonon, are in good agreement with experiment for all the states observed here below 4.2 MeV, and also with the above-yrast levels known from earlier (p,2n) experiments.File in questo prodotto:
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