Author/Authors :
Cooper، نويسنده , Paul W , J.R. and Bernstein، نويسنده , , L. and McMahan، نويسنده , , M.A. and Powell، نويسنده , , J. and Wutte، نويسنده , , D. and Ahle، نويسنده , , L. and Benczer-Koller، نويسنده , , N. and Dashdorj، نويسنده , , D. and Kumbartzki، نويسنده , , G. and Mertzimekis، نويسنده , , T.J. and Schiller، نويسنده , , A. and Silver، نويسنده , , C. and Taylor، نويسنده , , M.J.، نويسنده ,
Abstract :
A batch mode process has been developed to produce a 76Kr ( T 1 / 2 = 14.8 h) radioactive ion beam at the Lawrence Berkeley National Laboratory 88-in. Cyclotron. First, a 6 particle μA α beam is run for 17 h to produce approximately 1014 76Kr atoms via the reaction 74Se(α, 2n)76Kr. Then, the krypton is separated from the target material and injected into the AECR-U ion source. Beam intensities as high as 3×108 particles per second are observed with an integrated beam current of 6(2)×1011 particles per 24-h batch cycle.
Keywords :
Gas transfer system , Radioactive heavy ion beam , 74Se , 76Kr , Re-cyclotron , Batch mode
