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Pronounced Shape Change Induced by Quasiparticle Alignment

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Pronounced Shape Change Induced by Quasiparticle Alignment

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Algora, Alejandro; De Angelis, G.; Brandolini, F.; Gadea Raga, Andrés; Farnea, E.; Gelletly, W.; Bazzacco, D.; Bizzeti, P.G.; Bizzeti Sona, A. M.; Martínez Pérez, Trinitario; Rubio Barroso, Berta; Skoda, S.; Ur, Calin A.

Aquest document és un/a article, creat/da en: 2000

Mean lifetimes of high-spin states of 74Kr have been determined using the Doppler-shift attenuation method. The high-spin states were studied using the 40Ca(40Ca,α2p) reaction at a beam energy of 160 MeV with the GASP γ-ray spectrometer. The ground-state band and negative parity side band show the presence of three different configurations in terms of transitional quadrupole deformations. A dramatic shape change was found along the ground-state band after the S-band crossing. The deduced quadrupole deformation changes are well reproduced by cranked Woods-Saxon Strutinsky calculations.

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