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Nanosecond Gating Properties of Proximity Focused Microchannel Plate Image Intensifiers

Description: A study has been carried out to characterize the optical gating properties of MCP image intensifiers. Emphasis is placed on parameters relevant to gating speed and correlations between the applied electrical and resultant optical gates.
Date: January 1, 1981
Creator: King, Nicholas S.P.; Yates, George J.; Jaramillo, Steven A.; Noel, Bruce W.; Detch, J.Lewis, Jr. & Ogle, James W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Phosphor Thermometry of Gas Turbine Surfaces

Description: This paper describes a nondestructive method for thermometry applicable to ceramic surfaces and coatings. To date our primary application has been to turbine engine and air vehicle surfaces. This method makes use of thermally sensitive phosphors many of which, as it turns out, are also ceramics. These materials fluoresce when suitably illuminated by ultraviolet light. The fluorescence intensity and decay time are well-behaved functions of temperature and therefore serve as reliable indicators o… more
Date: December 31, 1995
Creator: Allison, Steven W.; Beshears, David L.; Cates, Michael R.; Noel, Bruce W. & Turley, W. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Developoment of on-Line Temperature Measurement Instrumentation for Gasification Process Control

Description: This progress report covers continuing work to develop a temperature probe for a coal gasifier. A workable probe design requires finding answers to crucial questions involving the probe materials. We report on attempts to answer those questions. We designed, assembled, and tested a portable test fixture that can give relative quantitative data on the condition of phosphors. It needs a more-sensitive detector for optimum performance. We ordered an appropriate detector. A second experimental test… more
Date: April 30, 2003
Creator: Noel, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report

Description: This progress report covers continuing work to develop a temperature probe for a coal gasifier. A workable probe design requires finding answers to crucial questions involving the probe materials. We report on attempts to answer those questions. We attempted to measure the laser-input power at a wavelength of 355 nm that would damage the ends of sapphire fiber optics. We were surprised and pleased to learn that they survived an input power density of about 3 x 10{sup 9} W/cm{sup 2}, which great… more
Date: April 15, 2001
Creator: Noel, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report

Description: This progress report covers continuing work to develop a temperature probe for a coal gasifier. A workable probe design requires finding answers to crucial questions involving the probe materials. We report on attempts to answer those questions. We received and studied new samples of an important thermographic phosphor, YAG:Dy. We studied the brightness as a function of dopant concentration and the relative brightnesses of the pertinent thermographic emission lines, both with respect to each ot… more
Date: October 15, 2000
Creator: Noel, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report

Description: This progress report covers continuing work to develop a temperature probe for a coal gasifier. A workable probe design requires finding answers to crucial questions involving the probe materials. We report on attempts to answer those questions. We previously reported an apparent anomaly in the high-temperature behavior of fused-silica optical components. This time, we report on further anomalies in other components. These unexpected results impede or prevent acquiring data related to the proje… more
Date: November 15, 2001
Creator: Noel, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report

Description: This progress report covers continuing work to develop a temperature probe for a coal gasifier. A workable probe design requires finding answers to crucial questions involving the probe materials. We report on attempts to answer those questions. We designed, assembled, and tested a portable test fixture that can give relative quantitative data on the condition of phosphors. It needs a more-sensitive detector for optimum performance. We ordered an appropriate detector. An experimental test of th… more
Date: November 15, 2002
Creator: Noel, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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