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Precision in 2D temperature measurements using the thermographic phosphor BAM

Lindén, Johannes LU ; Knappe, Christoph LU ; Richter, Mattias LU and Aldén, Marcus LU (2012) In Measurement Science & Technology 23(8).
Abstract
Investigation of optimized spatial precision for surface temperature measurements is performed. The temperature is measured by means of two-color ratio imaging with ICCD cameras, using the thermographic phosphor BAM. The precision in temperature is put in relation to the spatial resolution, two quantities which involve a trade-off in this case: the more spatial smoothing the better precision, but also the worse spatial resolution. Two different setups are used in order to investigate the influence of laser shot-to-shot variations, the flat-field correction and image registration process on the precision. In order to achieve high precision it is crucial to operate the ICCD cameras with a gain setting that does not introduce nonlinearity... (More)
Investigation of optimized spatial precision for surface temperature measurements is performed. The temperature is measured by means of two-color ratio imaging with ICCD cameras, using the thermographic phosphor BAM. The precision in temperature is put in relation to the spatial resolution, two quantities which involve a trade-off in this case: the more spatial smoothing the better precision, but also the worse spatial resolution. Two different setups are used in order to investigate the influence of laser shot-to-shot variations, the flat-field correction and image registration process on the precision. In order to achieve high precision it is crucial to operate the ICCD cameras with a gain setting that does not introduce nonlinearity effects at the present level of irradiance. The results provide guidance on the precision to be expected from surface temperature measurements using the two-color ratio technique in combination with thermographic phosphors and also confirm the importance of highly stable and linear ICCD detectors. At room temperature and low spatial resolution the precision is evaluated to 0.4%. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
laser-induced phosphorescence, thermographic phosphors, thermometry, ICCD detectors
in
Measurement Science & Technology
volume
23
issue
8
publisher
IOP Publishing
external identifiers
  • wos:000306366600028
  • scopus:84863828522
ISSN
0957-0233
DOI
10.1088/0957-0233/23/8/085205
language
English
LU publication?
yes
id
5d79bcff-9898-4dbd-83f4-8e7294e9edf8 (old id 2991576)
date added to LUP
2012-08-22 14:43:45
date last changed
2017-02-12 03:56:45
@article{5d79bcff-9898-4dbd-83f4-8e7294e9edf8,
  abstract     = {Investigation of optimized spatial precision for surface temperature measurements is performed. The temperature is measured by means of two-color ratio imaging with ICCD cameras, using the thermographic phosphor BAM. The precision in temperature is put in relation to the spatial resolution, two quantities which involve a trade-off in this case: the more spatial smoothing the better precision, but also the worse spatial resolution. Two different setups are used in order to investigate the influence of laser shot-to-shot variations, the flat-field correction and image registration process on the precision. In order to achieve high precision it is crucial to operate the ICCD cameras with a gain setting that does not introduce nonlinearity effects at the present level of irradiance. The results provide guidance on the precision to be expected from surface temperature measurements using the two-color ratio technique in combination with thermographic phosphors and also confirm the importance of highly stable and linear ICCD detectors. At room temperature and low spatial resolution the precision is evaluated to 0.4%.},
  articleno    = {085205},
  author       = {Lindén, Johannes and Knappe, Christoph and Richter, Mattias and Aldén, Marcus},
  issn         = {0957-0233},
  keyword      = {laser-induced phosphorescence,thermographic phosphors,thermometry,ICCD detectors},
  language     = {eng},
  number       = {8},
  publisher    = {IOP Publishing},
  series       = {Measurement Science & Technology},
  title        = {Precision in 2D temperature measurements using the thermographic phosphor BAM},
  url          = {http://dx.doi.org/10.1088/0957-0233/23/8/085205},
  volume       = {23},
  year         = {2012},
}