Wave numbers and Ar pressure-induced shifts of 198Hg atomic lines measured by Fourier transform spectroscopy

Details Wave numbers and Ar pressure-induced shifts of 198Hg atomic lines measured by Fourier transform spectroscopy Wave numbers and Ar pressure-induced shifts of 198Hg atomic lines measured by Fourier transform spectroscopy

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jphb...38.3739v&link_type=abstract

Journal of Physics B: Atomic, Molecular, and Optical Physics, Volume 38, Issue 20, pp. 3739-3753 (2005).

Physics

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Scientific paper

Wave numbers and argon-pressure-induced shifts of mercury emission lines were measured using a UV/visible Fourier transform spectrometer (FTS). The observations were made with electrodeless lamps containing isotopically pure 198Hg and argon buffer gas at pressures of 33 Pa (1/4 Torr), 400 Pa (3 Torr), 933 Pa (7 Torr) and 1333 Pa (10 Torr). Calibration of the FTS wave number scale was obtained from the four most prominent 198Hg lines (6p 3P2 7s 3S1 at 546.2 nm, 6p 3P1 7s 3S1 at 436 nm, 6p 3P0 7s 3S1 at 404.8 nm and 6p 3P2 6d 3D3 at 365.1 nm), enabling measurements of wave numbers and argon pressure shifts of other UV and visible mercury transitions with high accuracy. Our measurements provide new data for the wave numbers and pressure-induced shifts of 20 mercury lines. The wave numbers of mercury lines emitted from the 400 Pa (3 Torr) lamp can be used as standards for wavelength calibration in inductively coupled plasma (ICP) spectrochemical analysis or in experiments where medium-resolution monochromators are used. The pressure-induced shifts of the 198Hg emission lines are in reasonable agreement with theoretical predictions and could be of interest for validating calculations of mercury argon interactions.

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