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Response Regime Studies on Standard Detectors for Decay Time Determination in Phosphor Thermometry

Knappe, Christoph LU ; Abou Nada, Fahd Jouda LU ; Lindén, Johannes LU ; Richter, Mattias LU and Aldén, Marcus LU (2013) 9th International Temperature Symposium on Temperature - Its Measurement and Control in Science and Industry 1552. p.879-884
Abstract
This work compares the extent of linear response regimes from standard time-resolving optical detectors for phosphor thermometry. Different types of Photomultipliers (ordinary and time-gated) as well as an Avalanche Photodiode are tested and compared using the phosphorescent time decay of CdWO4 that ranges from 10 mu s down to a few ns within a temperature span of 290 to 580 K. Effects originating from incipient detector saturation, far from obvious to the operator's eye, are revealed as a change in evaluated phosphorescence decay time. Since the decay time of thermographic phosphors itself is used for temperature determination - systematic temperature errors up to several tens of Kelvins may be introduced by such detector saturation. A... (More)
This work compares the extent of linear response regimes from standard time-resolving optical detectors for phosphor thermometry. Different types of Photomultipliers (ordinary and time-gated) as well as an Avalanche Photodiode are tested and compared using the phosphorescent time decay of CdWO4 that ranges from 10 mu s down to a few ns within a temperature span of 290 to 580 K. Effects originating from incipient detector saturation, far from obvious to the operator's eye, are revealed as a change in evaluated phosphorescence decay time. Since the decay time of thermographic phosphors itself is used for temperature determination - systematic temperature errors up to several tens of Kelvins may be introduced by such detector saturation. A detector mapping procedure is suggested in order to identify linear response regions where the decay-to-temperature evaluation can be performed unbiased. Generation of such a library is highly recommended prior to any quantitative measurement attempt. Using this detector library, even signals collected in the partly saturated regime can be corrected to their unbiased value extending the usable detector operating range significantly. Further, the use of an external current-to-voltage amplifier proved useful for most applications in time-based phosphor thermometry helping to limit saturation effects whilst maintaining a reasonable bandwidth and signal outputs. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
thermographic phosphor, laser-induced phosphorescence, lifetime, decay, time, time-resolved, saturation
host publication
Temperature: Its Measurement and Control in Science and Industry, Vol 8
volume
1552
pages
879 - 884
publisher
Amer. Inst. Physics
conference name
9th International Temperature Symposium on Temperature - Its Measurement and Control in Science and Industry
conference dates
2012-03-19 - 2012-03-23
external identifiers
  • wos:000331284900155
  • scopus:84885011916
ISSN
0094-243X
1551-7616
DOI
10.1063/1.4819660
language
English
LU publication?
yes
id
7241d34a-bf85-4600-9387-6ec35995aae0 (old id 4376288)
date added to LUP
2016-04-01 10:54:44
date last changed
2020-01-12 06:11:31
@inproceedings{7241d34a-bf85-4600-9387-6ec35995aae0,
  abstract     = {This work compares the extent of linear response regimes from standard time-resolving optical detectors for phosphor thermometry. Different types of Photomultipliers (ordinary and time-gated) as well as an Avalanche Photodiode are tested and compared using the phosphorescent time decay of CdWO4 that ranges from 10 mu s down to a few ns within a temperature span of 290 to 580 K. Effects originating from incipient detector saturation, far from obvious to the operator's eye, are revealed as a change in evaluated phosphorescence decay time. Since the decay time of thermographic phosphors itself is used for temperature determination - systematic temperature errors up to several tens of Kelvins may be introduced by such detector saturation. A detector mapping procedure is suggested in order to identify linear response regions where the decay-to-temperature evaluation can be performed unbiased. Generation of such a library is highly recommended prior to any quantitative measurement attempt. Using this detector library, even signals collected in the partly saturated regime can be corrected to their unbiased value extending the usable detector operating range significantly. Further, the use of an external current-to-voltage amplifier proved useful for most applications in time-based phosphor thermometry helping to limit saturation effects whilst maintaining a reasonable bandwidth and signal outputs.},
  author       = {Knappe, Christoph and Abou Nada, Fahd Jouda and Lindén, Johannes and Richter, Mattias and Aldén, Marcus},
  booktitle    = {Temperature: Its Measurement and Control in Science and Industry, Vol 8},
  issn         = {0094-243X},
  language     = {eng},
  pages        = {879--884},
  publisher    = {Amer. Inst. Physics},
  title        = {Response Regime Studies on Standard Detectors for Decay Time Determination in Phosphor Thermometry},
  url          = {http://dx.doi.org/10.1063/1.4819660},
  doi          = {10.1063/1.4819660},
  volume       = {1552},
  year         = {2013},
}