Author/Authors :
Grinyer، نويسنده , , G.F. and Thomas، نويسنده , , J.C. and Blank، نويسنده , , B. and Bouzomita، نويسنده , , John H. M. Austin، نويسنده , , R.A.E. and Ball، نويسنده , , G.C. and Bucaille، نويسنده , , F. and Delahaye، نويسنده , , P. and Finlay، نويسنده , , P. and Frémont، نويسنده , , G. and Gibelin، نويسنده , , J. and Giovinazzo، نويسنده , , J. and Grinyer، نويسنده , , J. and Kurtukian-Nieto، نويسنده , , T. and Laffoley، نويسنده , , A.T. and Leach، نويسنده , , K.G. and Lefèvre، نويسنده , , A. and Legruel، نويسنده , , F. and Lescalié، نويسنده , , G. and Perez-Loureiro، نويسنده , , D.، نويسنده ,
Abstract :
The low-energy identification station at SPIRAL (Système de Production dʹIons Radioactifs Accélérés en Ligne) has been upgraded for studying the β decays of short-lived radioactive isotopes and to perform high-precision half-life and branching-ratio measurements for superallowed Fermi and isospin T= 1 / 2 mirror β decays. These new capabilities, combined with an existing Paul trap setup for measurements of β–ν angular-correlation coefficients, provide a powerful facility for investigating fundamental properties of the electroweak interaction through nuclear β decays. A detailed description of the design study, construction, and first results obtained from an in-beam commissioning experiment on the β+ decays 14 O and 17F are presented.
Keywords :
Tape transport system , Half-lives , Superallowed Fermi ? decay , branching ratios , GEANT4 simulations , Mirror ? decay
