Abstract
A new ion beam of Th-229 is available at the Jyvasklya IGISOL facility, produced from the alpha decay of U-223. A small branching ratio (approximate to 2%) is believed to populate the inferred low-lying (5.5 eV) isomeric state in Th-229. A laser ionization scheme is currently being developed to improve the yield of Th-229 from the source. The ion source uses a novel electric field configuration for fast and efficient extraction of alpha-recoils and is able to provide beams of short lived (tau >= 30 ms) radioactive nuclei. Identification of the isomeric state by collinear laser spectroscopy will reduce the lower lifetime limit of the state and provide the first direct evidence for its existence.
Original language | English |
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Pages (from-to) | 197-201 |
Number of pages | 5 |
Journal | Hyperfine Interactions |
Volume | 171 |
Issue number | 1-3 |
Early online date | 15 Feb 2007 |
DOIs | |
Publication status | Published - 4 Apr 2007 |
Keywords
- laser ionization
- Th-229
- collinear laser spectroscopy