Gamma ray detection with CHIMERA at LNS: results and perspectives

G. Cardella , F. Favela , N.S. Martorana , L. Acosta , M.V. Andres , A. Camaiani , E. de Filippo , S. de Luca , N. Gelli , E. Geraci , B. Gnoffo , C. Guazzoni , D.J. Marín-Lámbarri , E.G. Lanza , G. Lanzalone , C. Maiolino , A. Nannini , A. Pagano , E.V. Pagano , M. Papa , S. Pirrone , G. Politi , E. Pollacco (1) , L. Quattrocchi , F. Rizzo , P. Russotto , D. Santonocito , V. Sicari , A. Trifirò , M. Trimarchi

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

We describe the use of the 4tt CHIMERA charged particle detector as a large efficiency y-ray detector. The CsI(Tl) stage of the CHIMERA telescope is used to detect and identify y-rays. The high detection efficiency and the sufficient energy resolution guaranteed by CsI(Tl) allows us to use the detector for the study of rare decays. Two examples are reported: the low probability gamma decay (<10%) of the Pygmy resonance of a radioactive nucleus as the 68Ni; the measurement of the gamma decay probability of excited levels of 12C as the Hoyle state at 7.65 (∼10−4) MeV and the 3- level at 9.64 MeV (∼107), both important for the Carbon production in stars. Future experiments made possible at INFN-LNS by the availability of the new fragment separator FRAISE are also outlined.

Domaines: Astrophysique [astro-ph]; Instrumentations et Détecteurs [physics.ins-det]

G. Cardella, F. Favela, N.S. Martorana, L. Acosta, M.V. Andres, et al.. Gamma ray detection with CHIMERA at LNS: results and perspectives. Detection Systems and Techniques in Nuclear and Particle Physics, Sep 2019, Messina, Italy. pp.012007, ⟨10.1088/1742-6596/1561/1/012007⟩. ⟨hal-02892962⟩