1. Physics Department
and “NIS” Inter-departmental Centre - University of Torino; via P. Giuria 1, 10125, Torino, Italy
2. Istituto Nazionale di Fisica Nucleare (INFN) - Sez. Torino; via P. Giuria 1, 10125, Torino, Italy
3. Department of Nuclear Solid State Physics, University of Leipzig, 04103, Leipzig, Germany
4. Istituto Nazionale di Ricerca Metrologica (INRiM); Strada delle Cacce 91, 10135, Torino, Italy
5. Ruđer Bošković Institute; Bijenicka 54, P.O. Box 180, 10002, Zagreb, Croatia