Analysis of high-resolution spectra from a hybrid interferometric/dispersive spectrometer
| Autor: | Jill R. Scott, Phyllis Ko, Igor Jovanovic |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Physics - Instrumentation and Detectors Spectrometer Isotope business.industry FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Interferometry Optics High resolution spectra Laser-induced breakdown spectroscopy Electrical and Electronic Engineering Physical and Theoretical Chemistry Spectral resolution business Order of magnitude Fabry–Pérot interferometer Optics (physics.optics) Physics - Optics |
| Popis: | To more fully take advantage of a low-cost, small footprint hybrid interferometric/dispersive spectrometer, a mathematical reconstruction technique was developed to accurately capture the high-resolution and relative peak intensities from complex spectral patterns. A Fabry-Perot etalon was coupled to a Czerny-Turner spectrometer, leading to increased spectral resolution by more than an order of magnitude without the commensurate increase in spectrometer size. Measurement of the industry standard Hg 313.1555/313.1844 nm doublet yielded a ratio of 0.682, which agreed well with an independent measurement and literature values. The doublet separation (29 pm) is similar to the U isotope shift (25 pm) at 424.437 nm that is of interest to monitoring nuclear nonproliferation activities. Additionally, the technique was applied to LIBS measurement of the mineral cinnabar (HgS) and resulted in a ratio of 0.682. This reconstruction method could enable significantly smaller, portable high-resolution instruments with isotopic specificity, benefiting a variety of spectroscopic applications. Accepted to Optics Communications |
| Databáze: | OpenAIRE |
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