Abstract
Due to the collisions with alkali-metal atoms, the buffer gases used in spin-exchange optical pumping systems induce a broadening of spectral profiles and a shift in the resonance frequency. Here we report the pressure broadening and shift rates of K D 1 and D 2 lines in the presence of 21Ne for the first time and values for 3He have been reinvestigated by means of laser absorption spectroscopy. We have also examined the temperature dependence of these collisional effects in a range of 435–458 K. A comparison for the broadening and shift rates to those of other isotopes, 4He and 20Ne, is presented.
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An erratum to this article is available at http://dx.doi.org/10.1140/epjd/e2016-70423-y.
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Li, R., Li, Y., Jiang, L. et al. Pressure broadening and shift of K D1 and D2 lines in the presence of 3He and 21Ne. Eur. Phys. J. D 70, 139 (2016). https://doi.org/10.1140/epjd/e2016-60734-4
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DOI: https://doi.org/10.1140/epjd/e2016-60734-4