NUCL 11 |
| Radioactive Ion Beams (RIBs) at intermediate energy were successfully produced at the Laboratori Nazionali del Sud (LNS) by the In-Flight method (Projectile Fragmentation) since a few years ago (FRIBs project). 12C , 20Ne, 40Ar and 58Ni projectiles at incident energies between 62 and 40 AMeV were sent on 9Be and 27Al targets to produce RIBs. Production rates,A,Z energy and positions of both neutron and proton rich RIBs up to Z= 28 have been measured (fig.1-a). Transport along the LNS beam lines was measured getting up to 95% in the 20° line. Individual RIBs rates up to 105 ions/sec were extrapolated for primary beam currents on the order of 500 enA.
  Moreover, since the leading idea of the FRIBs project was to tag, event-by-event, each fragment,produced by the projectile fragmentation, after the selection by the LNS Achromatic Fragment Separator we apply the DE-ToF method to identify every ion (fig.1-b) just before it interacts with the secondary target. Such procedure was tested in a couple of very recent experiments performed at the LNS. The status and perspective of the project and an overview of research programs will be presented.
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30 years of Projectile Fragmentation
8:30 AM-12:15 PM, Sunday, 10 September 2006 Moscone Center -- Room 272, Oral
Division of Nuclear Chemistry & Technology |