Development towards in-gas-jet laser spectroscopy studies of actinium isotopes at LISOL

Research output: Contribution to journalArticle


  • Sebastian Raeder
  • Beyhan Bastin
  • M. Block
  • P. Creemers
  • P. Delahaye
  • Rafael Ferrer
  • X. Fléchard
  • Serge Franchoo
  • Liam Paul Gaffney
  • Camillo Granados
  • R. Heinke
  • L. Hijazi
  • Mark Huyse
  • Tobias Kron
  • Yuri Kudryavtsev
  • M. Laatiaoui
  • Nathalie Lecesne
  • F. Luton
  • Iain D. Moore
  • Yisel Martinez
  • E. Mogilevskiy
  • P. Naubereit
  • J. Piot
  • Sebastian Rothe
  • H Savajols
  • Simon Sels
  • Volker Sonnenschein
  • E. Traykov
  • Celine Van Beveren
  • Paul Van den Bergh
  • Piet Van Duppen
  • Klaus Wendt
  • Alexandra Zadvornaya

Institutes & Expert groups

  • KUL - Katholieke Universiteit Leuven
  • HIM - Helmholtz,Institut Mainz - Germany
  • GSI - Helmholtzzentrum für Schwerionenforschung GmbH
  • GANIL - Grand Accélérateur National d'Ions Lourds
  • JGU - Johannes Gutenberg University Mainz - Institut für Physik
  • SCK•CEN - Studiecentrum voor Kernenergie/Centre d’Etude de l’Energie Nucléaire
  • LPC - Laboratoire de Physique Corpusculaire de Caen
  • IPN - Institute de Physique Nucléaire
  • University of Jyväskylä - Finland
  • MSU - Lomonosov Moscow State University - Russia
  • CERN - Conseil Européen pour la Recherche Nucléaire

Documents & links


To study exotic nuclides at the borders of stability with laser ionization and spectroscopy techniques, highest efficiencies in combination with a high spectral resolution are required. These usually opposing requirements are reconciled by applying the in-gas-laser ionization and spectroscopy (IGLIS) technique in the supersonic gas jet produced by a de Laval nozzle installed at the exit of the stopping gas cell. Carrying out laser ionization in the low-temperature and low density supersonic gas jet eliminates pressure broadening, which will significantly improve the spectral resolution. This article presents the required modifications at the Leuven Isotope Separator On-Line (LISOL) facility that are needed for the first on-line studies of in-gas-jet laser spectroscopy. Different geometries for the gas outlet and extraction ion guides have been tested for their performance regarding the acceptance of laser ionized species as well as for their differential pumping capacities. The specifications and performance of the temporarily installed high repetition rate laser system, including a narrow bandwidth injection-locked Ti:sapphire laser, are discussed and first preliminary results on neutron-deficient actinium isotopes are presented indicating the high capability of this novel technique.


Original languageEnglish
Pages (from-to)382-387
Number of pages6
JournalNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publication statusPublished - 4 Feb 2016


  • Resonance ionization spectroscopy, Gas cell, Gas jet, Actinium

ID: 2159516