Back to Search
Start Over
Phosphor thermometry at 5 kHz rate using a high-speed fiber-optic spectrometer.
- Source :
- Journal of Applied Physics; 3/31/2020, Vol. 127 Issue 12, p1-10, 10p, 3 Diagrams, 4 Charts, 7 Graphs
- Publication Year :
- 2020
-
Abstract
- A simple kHz-rate spectral phosphor thermometry technique with sub-millisecond temporal resolution for contactless point measurements of short duration transient surface temperature changes was developed by employing a compact high-speed fiber-optic spectrometer, a high repetition rate pulsed green laser, and a fast decaying thermographic phosphor. Temperature changes were determined from the temperature-dependent emission spectra of the YAG:Ce phosphor using a spectral slope method. The precision of single-shot temperature measurements was better than 4% for temperatures up to 700 K. An application of the technique for time-resolved measurements of local transient temperature changes at 5 kHz during repetitive long CO<subscript>2</subscript> laser pulse heating is presented. The measured temperature transients are well-predicted using a two-dimensional axisymmetric heat transfer model. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 127
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 142515567
- Full Text :
- https://doi.org/10.1063/1.5120336