Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5140279 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2017 | 12 Pages |
Abstract
The resonant ionization laser ion source is an element selective, efficient and versatile ion source to generate radioactive ion beams at on-line mass separator facilities. For some elements with complex atomic structures and incomplete spectroscopic data, laser spectroscopic investigations are required for ionization scheme development. Laser resonance ionization spectroscopy using Ti:Sa lasers has been performed on antimony (Sb) at TRIUMF's off-line laser ion source test stand. Laser light of 230.217Â nm (vacuum wavelength) as the first excitation step and light from a frequency-doubled Nd:YVO4 laser (532Â nm) as the nonresonant ionization step allowed to search for suitable second excitation steps by continuous wavelength scans from 720Â nm to 920Â nm across the wavelength tuning range of a grating-tuned Ti:Sa laser. Upon the identification of efficient SES, the third excitation steps for resonance ionization were investigated by laser scans across Rydberg states, the ionization potential and autoionizing states. One Rydberg state and six AI states were found to be well suitable for efficient resonance ionization.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
R. Li, J. Lassen, J. Ruczkowski, A. Teigelhöfer, P. Bricault,