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Study of the neutron-rich isotope $^{46}$Ar through intermediate energy Coulomb excitation

Abstract : The preliminary value of the reduced transition probability B(E2; 0+ ! 2+1 ) in 46Ar has been determined using the Coulomb excitation technique at intermediate energy. The 46Ar was produced in the fragmentation of a 48Ca beam at GANIL. The -rays following the Coulomb excitation of the 2+1 were emitted in-flight and detected by the 64 BaF2 detectors of the Château de Cristal array. The relatively low B(E2) value of 46Ar reported in this article supports the semi-magic character of this nucleus due to the persistence of the N = 28 shell closure at Z = 18.
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S. Calinescu, L. Caceres, S. Grévy, O. Sorlin, D. Sohler, et al.. Study of the neutron-rich isotope $^{46}$Ar through intermediate energy Coulomb excitation. XXXIII Mazurian Lakes Conference on Physics, Sep 2013, Piaski, Poland. pp.199, ⟨10.5506/APhysPolB.45.199⟩. ⟨in2p3-00954485⟩

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