Investigation of potential laser-induced heating effects when using thermographic phosphors for gas-phase thermometry
Författare
Summary, in English
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.
Avdelning/ar
Publiceringsår
2009
Språk
Engelska
Sidor
237-240
Publikation/Tidskrift/Serie
Applied Physics B
Volym
96
Issue
2-3
Dokumenttyp
Artikel i tidskrift
Förlag
Springer
Ämne
- Atom and Molecular Physics and Optics
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0946-2171