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Competition between collective and noncollective excitation modes at high spin in 124Ba

Abstract : High-spin states in 124Ba were investigated in two experiments using the 64Ni(64Ni, 4n)124Ba reaction at three different beam energies. In-beam gamma-ray coincidences were measured with the Euroball and Gammasphere detector arrays. In the experiment with Euroball, the CsI detector array Diamant was employed to discriminate against charged-particle channels. Six new rotational bands were observed in 124Ba, and previously known bands were extended to higher spins. One of the bands shows a transition from collective to noncollective behavior at high spins. Configuration assignments are suggested on the basis of comparison with cranked shell model and cranked Nilsson-Strutinsky calculations
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Submitted on : Thursday, January 4, 2007 - 9:25:03 PM
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A. Al-Khatib, A.K. Singh, H. Hubel, P. Bringel, A. Burger, et al.. Competition between collective and noncollective excitation modes at high spin in 124Ba. Physical Review C, American Physical Society, 2006, 74, pp.014305. ⟨10.1103/PhysRevC.74.014305⟩. ⟨in2p3-00090258⟩

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