Author/Authors :
Steer، نويسنده , , A.N. and Jenkins، نويسنده , , D.G. and Glover، نويسنده , , R. and Nara Singh، نويسنده , , B.S. and Pattabiraman، نويسنده , , N.S. and Wadsworth، نويسنده , , R. and Eeckhaudt، نويسنده , , S. and Grahn، نويسنده , , T. and Greenlees، نويسنده , , P.T and Jones، نويسنده , , P. and Julin، نويسنده , , R. and Juutinen، نويسنده , , S. and Leino، نويسنده , , M. and Nyman، نويسنده , , M. and Pakarinen، نويسنده , , J. and Rahkila، نويسنده , , P. and Sarén، نويسنده , , J. and Scholey، نويسنده , , C. and Sorri، نويسنده , , J. and Uusitalo، نويسنده , , J. and Butler، نويسنده , , P.A. and Darby، نويسنده , , I.G. and Herzberg، نويسنده , , R.-D. and Joss، نويسنده , , D.T. and Page، نويسنده , , R.D. and Thomson، نويسنده , , David J. and Lemmon، نويسنده , , R. and Simpson، نويسنده , , J. and Blank، نويسنده , , B.، نويسنده ,
Abstract :
Tagging with charged particles and γ -rays at the focal plane of recoil separators has proven, over the last two decades, to be a very powerful tool for the identification of excited states in exotic nuclei produced with very low cross-sections. One of the key areas so far unexplored in terms of the tagging methodology has been performing correlations with β -particles at the focal plane of a recoil separator. A new technique entitled Recoil-Beta Tagging (RBT) has been developed, this technique exploits the unusual properties of Fermi super-allowed β emitters, which have both a short half-life ( ∼ 100 ms ) and high β + -endpoint energy. Correlating with such β -particles using a double-sided silicon strip detector and planar germanium detector as an effective Δ E – E telescope for high-energy positrons has allowed a proof-of-principle of this technique to be carried out, by cleanly identifying excited states in the proton-drip-line nucleus, 74Rb.
