About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advancement of Measurement Technologies for Harsh Environments
|
| Presentation Title |
Demonstration of a Sensor for On-Line Monitoring of Liquids in Extreme Environments |
| Author(s) |
Davis Bryars, Kayla Hahn, Munmun Jahan, Ammon Williams, Alexander Bataller |
| On-Site Speaker (Planned) |
Davis Bryars |
| Abstract Scope |
In order to assess the material composition of liquids in extreme environments, a new sensor has been demonstrated. The Submerged Plasma for Isotopic Detection and Experimental Resolution (SPIDER) probe is an on-line monitoring sensor which leverages optical emission spectroscopy of a DC atmospheric pressure glow discharge. The SPIDER probe has been demonstrated on LiCl-KCl with four salt additives, in addition to liquid metals and H2O/D2O mixtures. Spectroscopic analysis confirms the presence of all tested elements and provides limits of detection estimates and plasma properties. Temporal analysis of spectral features and the discharge circuit has allowed for the construction of a model analyte transport into the glow discharge plasma. Comparison of continuum and atomic line emissions with current transients shows two competing emission modes: droplet emission and film vaporization. The former induces spectral broadening with continuum emission, while the latter results in stronger, sharper, line emission. |