Edition 4, No. 4 August 30, 1996 Price: FREE
Editor: Carl J. Gross Contributor: J. R. Beene
At 1 PM today the initial goal of the low intensity commissioning phase of the HRIBF was achieved when a radioactive 70-As beam was produced, transported to the 25 MeV tandem accelerator, and accelerated to an energy of 140 MeV. The 70-As was produced with the 70-Ge(p,n) reaction on a liquid Ge target using a low intensity (~50 nA) proton beam from ORIC. After mass analysis and charge exchange, the 70-As beam, together with a 70-Ge pilot beam, was accelerated off the RIB injector platform to an energy of 200 keV and deposited on a moving tape system where the 70-As content was determined by detecting characteristic decay gamma-rays. The tape system was then retracted and the beam was transported to the tandem, accelerated, and the 70-As decay was again observed. Quantitative details will be provided next week.
Jerry D. Garrett, Scientific Director |Email: firstname.lastname@example.org Mail Stop 6368 |Tel: (423) 576-5489 Carl J. Gross, Scientific Liaison |Email: email@example.com Mail Stop 6371 |Tel: (423) 576-7698 Holifield Radioactive Ion Beam Facility |Tel: (423) 574-4113 Oak Ridge National Laboratory |Fax: (423) 574-1268 Oak Ridge, TN 37831