期刊
OPTICS LETTERS
卷 39, 期 3, 页码 594-597出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.39.000594
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- DOE/NNSA Office of Nonproliferation and Verification Research and Development [NA-22]
- Pacific Northwest National Laboratory is operated for the US Department of Energy by the Battelle Memorial Institute [DE-AC05-76RLO1830]
A two-beam differential laser absorption technique is used to measure U-238 absorption spectra with high signal-to-noise ratios in an atmospheric pressure laser-induced plasma. High-resolution absorption spectra are presented for the U-238 861 nm transition in the presence of dry air at pressures up to 760 Torr. A spectral linewidth (FWHM) of 2.23 +/- 0.13 GHz was found for the U-238 line in dry air at 760 Torr. Absorption spectrum measurements using a low U-238 concentration NIST glass standard were used to demonstrate sensitivity of the approach. (C) 2014 Optical Society of America
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