Yazar "Farnea, Enrico" seçeneğine göre listele

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  • Küçük Resim
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    Conceptual design and infrastructure for the installation of the first AGATA sub-array at LNL
    (Elsevier Science, 2011) Gadea, Andrés; Farnea, Enrico; Valiente-Dobòn, Jose Javier; Million, Bénédicte; Mengoni, Daniele; Bazzacco, Dino B.; Recchia, Francesco; Sezgin, Aydın
    The first implementation of the AGATA spectrometer consisting of five triple germanium detector clusters has been installed at Laboratori Nazionali di Legnaro, INFN. This setup has two major goals, the first one is to validate the gamma-tracking concept and the second is to perform an experimental physics program using the stable beams delivered by the Tandem-PIAVE-ALPI accelerator complex. A large variety of physics topics will be addressed during this campaign, aiming to investigate both neutron and proton-rich nuclei. The setup has been designed to be coupled with the large-acceptance magnetic-spectrometer PRISMA. Therefore, the in-beam prompt gamma rays detected with AGATA will be measured in coincidence with the products of multinucleon-transfer and deep-inelastic reactions measured by PRISMA. Moreover, the setup is versatile enough to host ancillary detectors, including the heavy-ion detector DANTE, the gamma-ray detector array HELENA, the Cologne plunger for lifetime measurements and the Si-pad telescope TRACE. In this paper the design; characteristics and performance figures of the setup will be described.
  • Küçük Resim
    Öğe
    Spectroscopy of odd-mass cobalt isotopes toward the N = 40 subshell closure and shell-model description of spherical and deformed states
    (American Physical Society, 2012) Recchia, Francesco; Lenzi, Silvia M.; Lunardi, Santo; Farnea, Enrico; Gadea, Andrés; Mârginean, Nicolae Marius; Napoli, Daniel Ricardo; Aydın, Sezgin
    The neutron-rich cobalt isotopes up to A=67 have been studied through multinucleon transfer reactions by bombarding a 238U target with a 460-MeV 70Zn beam. Unambiguous identification of prompt ? rays belonging to each nucleus has been achieved using coincidence relationships with the ions detected in a high-acceptance magnetic spectrometer. The new data are discussed in terms of the systematics of the cobalt isotopes and interpreted with large-scale shell-model calculations in the fpgd model space. In particular, very different shapes can be described in 67Co, at the edge of the island of inversion at N=40, where a low-lying highly deformed band coexists with a spherical structure.