Stopping, Trapping and Cooling of Radioactive Fission Fragments in an Ion Catcher Device |
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| Authors: | M Maier C Boudreau F Buchinger JA Clark JE Crawford J Dilling H Fukutani S Gulick JKP Lee RB Moore G Savard J Schwartz KS Sharma |
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| Institution: | (1) GSI Darmstadt, Planckstr. 1, D-64291 Darmstadt, Germany;(2) Department of Physics, McGill University, Montreal, PQ, Canada, H3A 2T8;(3) Department of Physics&Astronomy, University of Manitoba, Winnipeg, MB, Canada, R3T 2N2;(4) Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA |
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| Abstract: | An ion catcher as presented in this contribution is able to create cooled and very clean singly-charged ion pulses out of
a ‘hot’ beam within a very short period of time. Precision measurements on shortlived radioactive nuclides become possible.
This contribution describes experiments with a 252Cf fission source at the ‘gas-cooler’ at ATLAS (Argonne Tandem Linac Accelerating System) at the Argonne National Laboratories
(ANL), Argonne, USA1]. The system consists of a gas-cell to stop and thermalize the ions, two extraction radio frequency
quadrupole structures (RFQ) to separate the ions from the buffer gas and a buncher RFQ to cool and accumulate the ions. The
system and its performance is investigated with two independent measurements. The transported activity was measured to determine
the efficiency of the system and time of flight measurements (TOF) were performed to determine the transported masses with
respect to the transported activity.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | stopping trapping cooling 252Cf fission fragments ion catcher gas-cell |
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