Ammonia measurements with femtosecond laser-induced plasma spectroscopy

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Ammonia measurements with femtosecond laser-induced plasma spectroscopy. / Zhang, Dayuan; Gao, Qiang; Li, Bo; Liu, Jixu; Li, Zhongshan.

In: Applied Optics, Vol. 58, No. 5, 10.02.2019, p. 1210-1214.

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Zhang, Dayuan ; Gao, Qiang ; Li, Bo ; Liu, Jixu ; Li, Zhongshan. / Ammonia measurements with femtosecond laser-induced plasma spectroscopy. In: Applied Optics. 2019 ; Vol. 58, No. 5. pp. 1210-1214.

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TY - JOUR

T1 - Ammonia measurements with femtosecond laser-induced plasma spectroscopy

AU - Zhang, Dayuan

AU - Gao, Qiang

AU - Li, Bo

AU - Liu, Jixu

AU - Li, Zhongshan

PY - 2019/2/10

Y1 - 2019/2/10

N2 - Femtosecond laser-induced plasma spectroscopy for in situ ammonia (NH 3 ) measurements was demonstrated in NH 3 ∕N 2 mixtures. When a femtosecond laser at 800 nm was focused at the flow field, the parent NH 3 molecules would be photolyzed to generate electronics excited NH fragments, and then indirect measurements of NH 3 could be realized by detecting the NH fluorescence (A 3 Π − X 3 Σ − ) at 336 nm. A detection limit of 205 ppm was achieved. This work is the first attempt, to the best of our knowledge, for ammonia measurements with a femtosecond laser, and the results are useful for the development of ammonia diagnostics.

AB - Femtosecond laser-induced plasma spectroscopy for in situ ammonia (NH 3 ) measurements was demonstrated in NH 3 ∕N 2 mixtures. When a femtosecond laser at 800 nm was focused at the flow field, the parent NH 3 molecules would be photolyzed to generate electronics excited NH fragments, and then indirect measurements of NH 3 could be realized by detecting the NH fluorescence (A 3 Π − X 3 Σ − ) at 336 nm. A detection limit of 205 ppm was achieved. This work is the first attempt, to the best of our knowledge, for ammonia measurements with a femtosecond laser, and the results are useful for the development of ammonia diagnostics.

U2 - 10.1364/AO.58.001210

DO - 10.1364/AO.58.001210

M3 - Article

VL - 58

SP - 1210

EP - 1214

JO - Applied Optics

T2 - Applied Optics

JF - Applied Optics

SN - 2155-3165

IS - 5

ER -