Liquid-scintillation detection of preseparated 257Rf with the SISAK-system Academic Article uri icon


  • The fast liquid-liquid extraction system SISAK with continuous liquid scintillation detection was coupled to the Berkeley Gas-filled Separator to enable studies of the chemical properties of α-decaying transactinide elements. The preseparated transactinide 257Rf (4.7 s), was transported via a He/KCl-jet directly into the scintillation solution. This permitted the first unambiguous detection of transactinide atoms by the means of the α-liquid scintillation detectors of the SISAK-system. During the experiment, 89 257Rf atoms were observed. The type of events observed correspond well with the expectations based on half-lives, decay branches and transport- and hold-up times. The successful result of this experiment demonstrates that the system is well fitted for count-rates of 1-2 atoms/h and half-lives of a few seconds. © 2005 Elsevier B.V. All rights reserved.

author list (cited authors)

  • Stavsetra, L., Gregorich, K. E., Alstad, J., Breivik, H., Eberhardt, K., Folden, C. M., ... Omtvedt, J. P.

citation count

  • 28

publication date

  • May 2005