High-resolution saturation spectroscopy of singly-ionized iron with a pulsed uv laser
arXiv:0709.4032 · doi:10.1088/0957-0233/19/4/045602
Abstract
We describe the design and realization of a scheme for uv laser spectroscopy of singly-ionized iron (Fe II) with very high resolution. A buffer-gas cooled laser ablation source is used to provide a plasma close to room temperature with a high density of Fe II. We combine this with a scheme for pulsed-laser saturation spectroscopy to yield sub-Doppler resolution. In a demonstration experiment, we have examined an Fe II transition near 260 nm, attaining a linewidth of about 250 MHz. The method is well-suited to measuring transition frequencies and hyperfine structure. It could also be used to measure small isotope shifts in isotope-enriched samples.
9 pages, 5 figures, updated Fig. 3. For submission to J. Phys. B
References in corpus (14)
- Further Evidence for Cosmological Evolution of the Fine Structure Constant
- Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
- Possible evidence for a variable fine structure constant from QSO absorption lines: motivations, analysis and results
- Limits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars
- Sub-dekahertz ultraviolet spectroscopy of 199Hg+
- On the variation of the fine-structure constant: Very high resolution spectrum of QSO HE 0515-4414
- Most precise single redshift bound to Delta alpha/alpha
- Does the fine structure constant vary? A detailed investigation into systematic effects
- Space-time variation of the fine structure constant and evolution of isotope abundances
- Improved calculation of relativistic shift and isotope shift in Mg I
- Accurate laboratory ultraviolet wavelengths for quasar absorption-line constraints on varying fundamental constants
- Optical emission investigation of laser-produced MgB2 plume expanding in an Ar buffer gas
- Configuration interaction calculation for the isotope shift in Mg I
- Laboratory spectroscopy and the search for space-time variation of the fine structure constant using QSO spectra