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Spectroscopic study of the cycling transition 4s[3/2](2)-4p[5/2](3) at 811.8 nm in Ar-39: Hyperfine structure and isotope shift

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journal contribution
posted on 27.05.2011, 00:00 by W. Williams, Z. T. Lu, K. Rudinger, R. Yokochi, P. Mueller
Doppler-free saturated absorption spectroscopy is performed on an enriched radioactive Ar-39 sample. The spectrum of the 3s(2)3p(5)4s[3/2](2)-3s(2)3p(5)4p[5/2](3) cycling transition at 811.8 nm is recorded, and its isotope shift between Ar-39 and Ar-40 is derived. The hyperfine coupling constants A and B for both the 4s[3/2](2) and 4p[5/2](3) energy levels in Ar-39 are also determined. The results partially disagree with a recently published measurement of the same transition. Based on earlier measurements as well as the current work, the isotope shift and hyperfine structure of the corresponding transition in Ar-37 are also calculated. These spectroscopic data are essential for the realization of laser trapping and cooling of Ar-37,Ar-39.


This work was supported by the US Department of Energy, Office of Nuclear Physics under Contract No. DE-AC02-06CH11357.


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The original source for this publication is at American Physical Society []; DOI: 10.1103/PhysRevA.83.012512. ©2011 American Physical Society


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