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
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/279648
- author
- Metz, Thomas LU ; Bai, Xiao LU ; Ossler, Frederik LU and Aldén, Marcus LU
- organization
- publishing date
- 2004
- 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}}, }