Author/Authors :
Kumar، نويسنده , , R. and Molina، نويسنده , , F.G. and Pietri، نويسنده , , S. and Casarejos، نويسنده , , E. and Algora، نويسنده , , A. and Benlliure، نويسنده , , J. and Doornenbal، نويسنده , , P. and Gerl، نويسنده , , J. and Gorska، نويسنده , , M. and Kojouharov، نويسنده , , I. and Podolyلk، نويسنده , , Zs. and Prokopowicz، نويسنده , , W. and Regan، نويسنده , , P.H. and Rubio، نويسنده , , B. and Schaffner، نويسنده , , H. and Tashenov، نويسنده , , S. and Wollersheim، نويسنده , , H.-J.، نويسنده ,
Abstract :
An active stopper for the RISING project at GSI has been developed for β -decay studies and conversion electron spectroscopy following projectile fragmentation/fission reactions. This system employs six double-sided silicon strip detectors in the final focal plane of the GSI FRagment Separator (FRS) to detect both the fragment implantations and their subsequent charged-particle ( α , β , p) decays. The wide range of energy response required (150 keV up to several GeVs) was covered by the use of a logarithmic preamplifier. Measurements with a 207Bi conversion electron source yielded an energy resolution of 20 keV at electron energies of ∼ 1 MeV and a detection threshold of 150 keV. The response to the implantation of 400 AMeV 136Xe ions in the active stopper is also discussed in the present paper.
