Details

Autor(en) / Beteiligte

• Zhao, Y. L
• Deng, K
• Shi, J. C

Titel

fs laser-induced filament study of aliphatic nitroalkanes: correlation between molecular structure and spectroscopic evolution of the filament

Ist Teil von

• Analyst (London), 2022-02, Vol.147 (5), p.889-896

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2022

Quelle

MEDLINE

Beschreibungen/Notizen

• Three aliphatic nitroalkanes, nitromethane, nitroethane, and 1-nitropropane, are investigated with fs laser-induced filament and breakdown spectroscopy (LIFBS). Filament emission spectra, C I, the CN violet system (B 2 Σ + − X 2 Σ + , Δ ν = 0 sequence), and the C 2 swan system (d 3 Π g − a 3 Π u , Δ ν = 0 sequence), are obtained. The time integrated intensities of CN and C 2 can be used for identifying the three nitroalkanes. The filament features (length, diameter, and temperature) of the CN and C 2 emissions are analyzed; C 2 converts to CN through a single-atom substitution reaction between C 2 and N atoms at the early stage, which mainly occurs at the head and tail parts of the filament with a lower temperature rather than at the hotter middle part. fs laser-induced filament and breakdown spectroscopy can be used for studying the correlation between the molecular structure and spectroscopic evolution of the filament.