Laser-induced fluorescence studies of polycyclic aromatic hydrocarbons (PAH) vapors at high temperatures.

Journal Article (Journal Article)

In this work, we present the fluorescence spectra of anthracene and pyrene vapors at different elevated temperatures (from 150 to 650 degrees C) excited with the 337 nm line of a nitrogen laser. We describe the high temperature effects on the resulting spectral properties including spectral intensity, spectral bandwidth and spectral shift. We found that the PAH fluorescence spectral bandwidths become very broad as the temperature increases. The broadening is mainly due to thermal vibrational sequence congestion. We also have found that the fluorescence intensity of pyrene vapor increases with increasing temperature, which results from the increase of the pyrene vapor absorption cross section at 337 nm.

Full Text

Duke Authors

Cited Authors

  • Chi, Z; Cullum, BM; Stokes, DL; Mobley, J; Miller, GH; Hajaligol, MR; Vo-Dinh, T

Published Date

  • June 2001

Published In

Volume / Issue

  • 57 / 7

Start / End Page

  • 1377 - 1384

PubMed ID

  • 11446693

Electronic International Standard Serial Number (EISSN)

  • 1873-3557

International Standard Serial Number (ISSN)

  • 1386-1425

Digital Object Identifier (DOI)

  • 10.1016/s1386-1425(00)00479-0


  • eng