The selective and efficient laser ion source and trap project LIST for on-line production of exotic nuclides

Abstract

Laser ion sources based on resonant excitation and ionization of atoms are well-established tools for selective and efficient production of radioactive ion beams. A recent trend is the complementary installation of reliable state-of-theart all solid-state Ti:Sapphire laser systems. To date, 35 elements of the Periodic Table are available at laser ion sources by using these novel laser systems, which complements the overall accessibility to 54 elements including use of traditional dye lasers. Recent progress in the field concerns the identification of suitable optical excitation schemes for Ti:Sapphire laser excitation as well as technical developments of the source in respect to geometry, cavity material as well as by incorporation of an ion guide system in the form of the laser ion source trap LIST.

Atomic physics techniques for studying nuclear ground state properties, fundamental interactions and symmetries: status and perspectives

“…Reliability, ease of maintenance and operation, pulse length and power, spectral band width and coverage, and last but not least operation costs are here the decisive parameters. As reported by Klaus Wendt, laser systems based on all-solid-state technology are presently replacing copper vapour lasers and dye laser systems [82][83][84] and are also applied to trace analysis of rare isotopes [51,85]. However, an efficient path for resonant excitation and ionization is intimately connected to the laser system applied for resonance ionization.…”

“…However, an efficient path for resonant excitation and ionization is intimately connected to the laser system applied for resonance ionization. Therefore, extensive search for such excitation schemes is going on [75,83,84] and is also required for the future.…”

“…Another solution called laser ion source trap (LIST), a combination of a laser ion source with an ion trap, was proposed by Blaum et al [89] quite some time ago. In the meantime development work at Jyväskylä [90], Louvain-La-Neuve [91], Mainz [83,92], and TRIUMF [76] was performed. A breakthrough was achieved by the Leuven group as mentioned above by the experiments on Cu isotopes at the LISOL facility in Louvain-La-Neuve [44], where a combination of an IGISOL gas cell and a linear sextupole radiofrequency trap was shown to suppress the isobaric background very effectively.…”