Author/Authors :
Jiang، نويسنده , , C.L. and Henderson، نويسنده , , D.J. and Seweryniak، نويسنده , , D. and Tanihata، نويسنده , , I. and Rehm، نويسنده , , K.E. and Davids، نويسنده , , C.N. and Peterson، نويسنده , , D. and Back، نويسنده , , B.B. and Collon، نويسنده , , P. and Greene، نويسنده , , J.P. and Janssens، نويسنده , , R.V.F. and Kurtz، نويسنده , , S. K. Lister، نويسنده , , C.J. and Pardo، نويسنده , , R.C and Paul، نويسنده , , M. and Pennington، نويسنده , , T.O. and Shumard، نويسنده , , B. and Sinha، نويسنده , , S. and Tang، نويسنده , , X.D. and Zhu، نويسنده , , S.، نويسنده ,
Abstract :
A new focal-plane detector system has been designed and constructed for measuring very small heavy-ion induced fusion-evaporation cross sections with the Fragment Mass Analyzer (FMA) at Argonne National Laboratory. The system has been tested and successfully used in a fusion-evaporation excitation function measurement for 64 Ni + 100 Mo down to the 5 nb level. The design and performance of the detector system are described in detail with some examples from the latest data. Besides excellent tracking capabilities for each event measured in the detector, suppression of scattered beam background of the order of 4 × 10 - 17 has been demonstrated.
