Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 317, Issue -, Pages 417-421Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2013.06.039
Keywords
Laser ion source; Ion trap; LIST; On-line mass separator; In-source laser spectroscopy
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Funding
- Science and Technology Facilities Council [ST/J004189/1, ST/J000159/1, ST/G006415/1] Funding Source: researchfish
- STFC [ST/J000159/1, ST/G006415/1, ST/J004189/1] Funding Source: UKRI
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The 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 Po-217 and Po-219. (C) 2013 Elsevier B.V. All rights reserved.
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