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Fluorescence lifetimes of formaldehyde (H2CO) in the (A)over-tilde(1)A(2) -> (X)over-tilde(1)A(1) band system at elevated temperatures and pressures

Metz, Thomas LU ; Bai, Xiao LU ; Ossler, Frederik LU and Aldén, Marcus LU (2004) In Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 60(5). p.1043-1053
Abstract
Fluorescence lifetimes of formaldehyde excited by picosecond laser radiation with a wavelength of 355 nm were determined in nitrogen gas in a cell using time-resolved laser-induced fluorescence spectroscopy. The measurements were conducted at temperatures between 295 and 770 K and pressures up to 10 bar (1 MPa). Detection was broadband in most cases. Temperature and pressure were found to have a quenching effect on the fluorescence. At 295 K and pressures between 1 and 5 bar, decay rates between 0.03 and 0.04 ns(-1) were observed. At 770 K, the decay rates increased from 0.11 to 0.17 ns(-1) as the pressure was raised from 1 to 10 bar. The dependence on pressure was not linear at 1 bar. At 10 bar the linearity is unclear. The dependence on... (More)
Fluorescence lifetimes of formaldehyde excited by picosecond laser radiation with a wavelength of 355 nm were determined in nitrogen gas in a cell using time-resolved laser-induced fluorescence spectroscopy. The measurements were conducted at temperatures between 295 and 770 K and pressures up to 10 bar (1 MPa). Detection was broadband in most cases. Temperature and pressure were found to have a quenching effect on the fluorescence. At 295 K and pressures between 1 and 5 bar, decay rates between 0.03 and 0.04 ns(-1) were observed. At 770 K, the decay rates increased from 0.11 to 0.17 ns(-1) as the pressure was raised from 1 to 10 bar. The dependence on pressure was not linear at 1 bar. At 10 bar the linearity is unclear. The dependence on temperature appeared to be exponential. (C) 2003 Elsevier B.V. All rights reserved. (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
temperature, pressure, quenching, time-resolved, formaldehyde, laser-induced fluorescence
in
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
volume
60
issue
5
pages
1043 - 1053
publisher
Elsevier
external identifiers
  • wos:000221206300006
  • pmid:15084321
  • scopus:1842853866
ISSN
1386-1425
DOI
10.1016/S1386-1425(03)00335-4
language
English
LU publication?
yes
id
04dc394c-450a-40e4-8666-410693a884e8 (old id 279648)
date added to LUP
2016-04-01 16:52:50
date last changed
2022-03-15 03:38:41
@article{04dc394c-450a-40e4-8666-410693a884e8,
  abstract     = {{Fluorescence lifetimes of formaldehyde excited by picosecond laser radiation with a wavelength of 355 nm were determined in nitrogen gas in a cell using time-resolved laser-induced fluorescence spectroscopy. The measurements were conducted at temperatures between 295 and 770 K and pressures up to 10 bar (1 MPa). Detection was broadband in most cases. Temperature and pressure were found to have a quenching effect on the fluorescence. At 295 K and pressures between 1 and 5 bar, decay rates between 0.03 and 0.04 ns(-1) were observed. At 770 K, the decay rates increased from 0.11 to 0.17 ns(-1) as the pressure was raised from 1 to 10 bar. The dependence on pressure was not linear at 1 bar. At 10 bar the linearity is unclear. The dependence on temperature appeared to be exponential. (C) 2003 Elsevier B.V. All rights reserved.}},
  author       = {{Metz, Thomas and Bai, Xiao and Ossler, Frederik and Aldén, Marcus}},
  issn         = {{1386-1425}},
  keywords     = {{temperature; pressure; quenching; time-resolved; formaldehyde; laser-induced fluorescence}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1043--1053}},
  publisher    = {{Elsevier}},
  series       = {{Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy}},
  title        = {{Fluorescence lifetimes of formaldehyde (H2CO) in the (A)over-tilde(1)A(2) -> (X)over-tilde(1)A(1) band system at elevated temperatures and pressures}},
  url          = {{http://dx.doi.org/10.1016/S1386-1425(03)00335-4}},
  doi          = {{10.1016/S1386-1425(03)00335-4}},
  volume       = {{60}},
  year         = {{2004}},
}