Published In Rev. Sci. Instrum. Date Sun, 02/01/1998 - 12:00 Volume 69 (2) Pages 761-763 DOI 10.1063/1.1148978 Paper Category RILIS Development Author(s) J Lettry R Catherall G J Focker O C Jonsson E Kugler H L Ravn C Tamburella the ISOLDE Collaboration V N Fedoseyev V I Mishin G Huber V Sebastian M Koizumi U Köster