Investigations Of The Efficiency Of A Detector For Heavy Ions And Feasibility Study For A New Design

A Recoil Filter Detector I RFO) which was del'eloped in the Hahn-:Ieilner-Institutrn(H:II), Berlin has been im'estigated to determine the detector efficiencI', This detectorrnuses the forward emitted electrons from a thin mylar foil and it has been foundrnto hal-e lo'er efficiency than expected from theoretical considerations, For the testrnmeasurements a ,.olCf source was used, The fission products from the 2.o2Cf wererndetected in coincidence ,,-ith the prompt -forays and then the spectra I'ere analyzed,rnIn I he first part of this paper the reason for the 101' efficienc' of tllf' detector andrnthe solution for an impron,ment is presented, In the second part. as an alternative,rna Hew ,esigll of a det.ector is proposed. It- llses the backrard ~mittr'd electrons andrnmay he preferred, in some aspects, to the RFD

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