Lanthanide-Doped Luminescent Materials for Use As Temperature Sensors Under Extreme Conditions

Wednesday, 4 October 2017: 09:10
Chesapeake 11 (Gaylord National Resort and Convention Center)
H. Eilers, B. R. Anderson, and R. Gunawidjaja (Washington State University)
We are continuing the development of ex-situ and in-situ temperature sensors for use under extreme conditions such as in explosions and under shock conditions. The sensors consist of trivalent lanthanide-doped luminescent materials. For the ex-situ measurements we have developed temperature and thermal impulse (temperature and time) sensors based on inorganic materials. We are using the fluorescence from the lanthanides to monitor temperature-induced irreversible phase transitions in these materials. Comparisons with thermocouple data and simulations show good agreement for explosion tests. For the in-situ temperature sensors we use two-color fluorescence thermometry of lanthanide doped inorganics as well as lanthanide-based organic complexes. Using these materials we are able to image sub-second laser-induced heating events.