Abstract
Resonantly enhanced multiphoton ionization (REMPI) is proposed as an ultrasensitive detection method forreal-time monitoring of atmospheric pollutants in situ. The technique is demonstrated in the laboratory for NO diluted in pure nitrogen at 560 mbar. The MPI current resulting from (2+1) photon ionization of NO via the resonantC 2 H (v=0) state has been measured for several NO concentrations. Detection levels as low as 50 ppt have been obtained.
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Laboratoire associé à l'Université de Paris-Sud
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Guizard, S., Chapoulard, D., Horani, M. et al. Detection of NO traces Using resonantly enhanced multiphoton ionization: A method for monitoring atmospheric pollutants. Appl. Phys. B 48, 471–477 (1989). https://doi.org/10.1007/BF00694682
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DOI: https://doi.org/10.1007/BF00694682