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Title: A 2-D imaging heat-flux gauge

Abstract

This report describes a new leadless two-dimensional imaging optical heat-flux gauge. The gauge is made by depositing arrays of thermorgraphic-phosphor (TP) spots onto the faces of a polymethylpentene is insulator. In the first section of the report, we describe several gauge configurations and their prototype realizations. A satisfactory configuration is an array of right triangles on each face that overlay to form squares when the gauge is viewed normal to the surface. The next section of the report treats the thermal conductivity of TPs. We set up an experiment using a comparative longitudinal heat-flow apparatus to measure the previously unknown thermal conductivity of these materials. The thermal conductivity of one TP, Y{sub 2}O{sub 3}:Eu, is 0.0137 W/cm{center dot}K over the temperature range from about 300 to 360 K. The theories underlying the time response of TP gauges and the imaging characteristics are discussed in the next section. Then we discuss several laboratory experiments to (1) demonstrate that the TP heat-flux gauge can be used in imaging applications; (2) obtain a quantum yield that enumerates what typical optical output signal amplitudes can be obtained from TP heat-flux gauges; and (3) determine whether LANL-designed intensified video cameras have sufficient sensitivity to acquiremore » images from the heat-flux gauges. We obtained positive results from all the measurements. Throughout the text, we note limitations, areas where improvements are needed, and where further research is necessary. 12 refs., 25 figs., 4 tabs.« less

Authors:
;  [1]; ; ; ;  [2];  [3]
  1. Los Alamos National Lab., NM (United States)
  2. Oak Ridge National Lab., TN (United States)
  3. EG and G Energy Measurements, Inc., Goleta, CA (United States). Santa Barbara Operations
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOD; Department of Defense, Washington, DC (United States)
OSTI Identifier:
5286249
Report Number(s):
LA-12129-MS
ON: DE92000153
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE; HEAT FLUX; MEASURING METHODS; MEASURING INSTRUMENTS; DESIGN; THERMAL CONDUCTIVITY; CAMERAS; COMPUTER PROGRAM DOCUMENTATION; EUROPIUM; GADOLINIUM OXIDES; IMAGES; LAYERS; LUMINESCENCE; OPTICAL SYSTEMS; PHOSPHORS; SENSITIVITY; SULFUR OXIDES; TERBIUM; THIN FILMS; TURBINES; YTTRIUM OXIDES; CHALCOGENIDES; ELEMENTS; FILMS; GADOLINIUM COMPOUNDS; MACHINERY; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; RARE EARTHS; SULFUR COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TURBOMACHINERY; YTTRIUM COMPOUNDS; 440500* - Thermal Instrumentation- (1990-); 360603 - Materials- Properties

Citation Formats

Noel, B W, Borella, H M, Beshears, D L, Sartory, W K, Tobin, K W, Williams, R K, and Turley, W D. A 2-D imaging heat-flux gauge. United States: N. p., 1991. Web. doi:10.2172/5286249.
Noel, B W, Borella, H M, Beshears, D L, Sartory, W K, Tobin, K W, Williams, R K, & Turley, W D. A 2-D imaging heat-flux gauge. United States. https://doi.org/10.2172/5286249
Noel, B W, Borella, H M, Beshears, D L, Sartory, W K, Tobin, K W, Williams, R K, and Turley, W D. 1991. "A 2-D imaging heat-flux gauge". United States. https://doi.org/10.2172/5286249. https://www.osti.gov/servlets/purl/5286249.
@article{osti_5286249,
title = {A 2-D imaging heat-flux gauge},
author = {Noel, B W and Borella, H M and Beshears, D L and Sartory, W K and Tobin, K W and Williams, R K and Turley, W D},
abstractNote = {This report describes a new leadless two-dimensional imaging optical heat-flux gauge. The gauge is made by depositing arrays of thermorgraphic-phosphor (TP) spots onto the faces of a polymethylpentene is insulator. In the first section of the report, we describe several gauge configurations and their prototype realizations. A satisfactory configuration is an array of right triangles on each face that overlay to form squares when the gauge is viewed normal to the surface. The next section of the report treats the thermal conductivity of TPs. We set up an experiment using a comparative longitudinal heat-flow apparatus to measure the previously unknown thermal conductivity of these materials. The thermal conductivity of one TP, Y{sub 2}O{sub 3}:Eu, is 0.0137 W/cm{center dot}K over the temperature range from about 300 to 360 K. The theories underlying the time response of TP gauges and the imaging characteristics are discussed in the next section. Then we discuss several laboratory experiments to (1) demonstrate that the TP heat-flux gauge can be used in imaging applications; (2) obtain a quantum yield that enumerates what typical optical output signal amplitudes can be obtained from TP heat-flux gauges; and (3) determine whether LANL-designed intensified video cameras have sufficient sensitivity to acquire images from the heat-flux gauges. We obtained positive results from all the measurements. Throughout the text, we note limitations, areas where improvements are needed, and where further research is necessary. 12 refs., 25 figs., 4 tabs.},
doi = {10.2172/5286249},
url = {https://www.osti.gov/biblio/5286249}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 1991},
month = {Mon Jul 01 00:00:00 EDT 1991}
}