Performance of a high repetition pulse rate laser system for in-gas-jet laser ionization studies with the Leuven laser ion source @ LISOL

Research output: Contribution to journalArticle

Authors

  • Rafael Ferrer
  • Volker Sonnenschein
  • Beyhan Bastin
  • Serge Franchoo
  • Mark Huyse
  • Yuri Kudryavtsev
  • Tobias Kron
  • Nathalie Lecesne
  • Iain Moore
  • Benoit Osmond
  • Deyan Radulov
  • Sebastian Raeder
  • Lieven Rens
  • Michael Reponen
  • Johannes Rossnagel
  • Hervé Savajols
  • Tetsu Sonoda
  • Jean-Charles Thomas
  • Paul Van den Bergh
  • Piet Van Duppen
  • Klaus Wendt
  • Sergei Zemlyanoy

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Abstract

The laser ionization efficiency of the Leuven gas cell-based laser ion source was investigated under on- and off-line conditions using two distinctly different laser setups: a low-repetition rate dye laser system and a high-repetition rate Ti:sapphire laser system. A systematic study of the ion signal dependence on repetition rate and laser pulse energy was performed in off-line tests using stable cobalt and copper isotopes. These studies also included in-gas-jet laser spectroscopy measurements on the hyperfine structure of 63Cu. A final run under on-line conditions in which the radioactive isotope 59Cu (T1/2 = 81.5 s) was produced, showed a comparable yield of the two laser systems for in-gas-cell ionization. However, a significantly improved time overlap by using the high-repetition rate laser system for in-gas-jet ionization was demonstrated by an increase of the overall duty cycle, and at the same time, pointed to the need for a better shaped atomic jet to reach higher ionization efficiencies.

Details

Original languageEnglish
Pages (from-to)29-37
JournalNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume291
DOIs
Publication statusPublished - 18 Sep 2012

Keywords

  • Resonance ionization, Laser ion source, Laser repetition rate, Gas cell, Gas jet

ID: 106167