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Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry

Lindén, Johannes LU ; Takada, N.; Johansson, Bengt LU ; Richter, Mattias LU and Aldén, Marcus LU (2009) In Applied Physics B 96(2-3). p.237-240
Abstract
The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm(2)]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg2Al10O17:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further... (More)
The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm(2)]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg2Al10O17:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further development of phosphor thermography in free-flow applications feasible. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics B
volume
96
issue
2-3
pages
237 - 240
publisher
Springer
external identifiers
  • wos:000267885000003
  • scopus:67650945025
ISSN
0946-2171
DOI
10.1007/s00340-009-3608-7
language
English
LU publication?
yes
id
53b53136-f04e-4804-ad95-0b4d63c62acb (old id 1462852)
date added to LUP
2009-08-19 08:32:57
date last changed
2017-06-25 03:29:50
@article{53b53136-f04e-4804-ad95-0b4d63c62acb,
  abstract     = {The spectral emission from thermographic phosphors in free flow and its dependence of laser energy per cross section area (laser fluence [J/cm(2)]) has been investigated. Temperature measurements in gaseous flows using thermographic phosphors require higher laser energy than measurements performed on surfaces, due to lower particle density. A troublesome systematic error associated with high fluences would be introduced if the excitation laser heats the particles. In the presented work, three different types of the thermographic phosphor BaMg2Al10O17:Eu (BAM) are investigated. Spectra of the phosphorescence are achieved for a range of laser fluences. The results show no indications of the laser heating the particles, making further development of phosphor thermography in free-flow applications feasible.},
  author       = {Lindén, Johannes and Takada, N. and Johansson, Bengt and Richter, Mattias and Aldén, Marcus},
  issn         = {0946-2171},
  language     = {eng},
  number       = {2-3},
  pages        = {237--240},
  publisher    = {Springer},
  series       = {Applied Physics B},
  title        = {Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry},
  url          = {http://dx.doi.org/10.1007/s00340-009-3608-7},
  volume       = {96},
  year         = {2009},
}