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Laser spectroscopy at IGISOL IV
Authors:A R Dicker  P Campbell  B Cheal  D Gorelov  J Hakala  D J S Johnson  A Jokinen  V Kolhinen  J Koponen  I D Moore  H Penttilä  I Pohjalainen  M Reponen  S Rinta-Antila  V Sonnenschein  A Voss
Institution:1. Nuclear Physics Group, Schuster Laboratory, Brunswick Street, University of Manchester, Manchester, M13 9PL, UK
2. Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK
3. JYFL, University of Jyv?skyl?, Jyv?skyl?, Finland
Abstract:The IGISOL (Ion Guide Isotope Separator On-Line) facility at the University of Jyväskylä accelerator laboratory has been upgraded and relocated to a purpose built laboratory. The new laboratory includes a dedicated MCC30 proton/deuteron cyclotron, which in conjunction with beams from the K130 cyclotron, will greatly increase the beam time available at the facility. Full off-line commissioning of the laser spectroscopy beam-line was achieved in February 2013 and on-line commissioning with radioactive beams was achieved in May 2013. Optical hyperfine resonance spectra were obtained for previously studied radioactive molybdenum isotopes and used to investigate our long term stability, efficiency and ability to successfully reproduce previous results from IGISOL III. A preliminary spectrum for the previously unmeasurable $^{107}$ Mo was collected, displaying the improved capabilities of the new facility. Both data-sets show that the laser-line is ready for future experiments. The IGISOL IV beams are cleaner and have a higher radioactive content compared to similar experiments at IGISOL III.
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