First application of the Laser Ion Source and Trap (LIST) for on-line experiments at ISOLDE

Daneil A. Fink, Stephan D. Richter, Beyhan Bastin, Klaus Blaum, Richard Catherall, Thomas Elias Cocolios, Dmitry V. Fedorov, Valentin N. Fedosseev, Kieran T. Flanagan, Lars Ghys, A. Gottberg, N. Imai, T. Kron, N. Lecesne, K.M. Lynch, B.A. Marsh, T.M. Mendonca, D. Pauwels, E. Rapisarda, João Pedro Fernandes Pinto RamosR.E. Rossel, S. Rothe, M.D. Seliverstov, M. Sjödin, T. Stora, C. Van Beveren, K.D.A. Wendt

    Research outputpeer-review


    he Laser Ion Source and Trap (LIST) provides a new mode of operation for the resonance ionization laser ion source (RILIS) at ISOLDE/CERN, reducing the amount of surface-ionized isobaric contaminants by up to four orders of magnitude. After the first successful on-line test at ISOLDE in 2011 the LIST was further improved in terms of efficiency, selectivity, and reliability through several off-line tests at Mainz University and at ISOLDE. In September 2012, the first on-line physics experiments to use the LIST took place at ISOLDE. The measurements of the improved LIST indicate more than a twofold increase in efficiency compared to the LIST of the 2011 run. The suppression of surface-ionized francium contaminants has enabled the first in-source laser spectroscopy of 217Po and 219Po.

    Cite this