Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10559009 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2005 | 10 Pages |
Abstract
Quantum efficiency improvement of a cesium based resonance fluorescence detector (RFD) was achieved by enhancing the transfer in a particular channel of the RFD excitation scheme with noble gas-induced collisional excitation energy transfer (CEET). The influence of Cs-Ar and Cs-He collisional mixing between the 6D and 7P states in cesium on the quantum efficiency of the 6S â 6D â 7P â 6S excitation scheme was investigated by fluorescence measurements at relevant transitions. Ar-induced CEET was found to have little effect on the fluorescence response and quantum efficiency of the Cs RFD excitation scheme. However, a 35 fold quantum efficiency increase in the cesium resonance fluorescence detector response at only moderate He pressures was observed.
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Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Tiffany L. Correll, Vlasta Horvatic, Nicoló Omenetto, Cedomil Vadla, James D. Winefordner,