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Title: Single-crystal sapphire tubes as economical probes for optical pyrometry in harsh environments

Abstract

One-end-sealed single-crystal sapphire tubes are presented as a simple, robust, and economical alternative for bulky lightpipe probes. Thermal radiation from a blackbody cavity created at the inner surface of the sealed end is gathered by a simple lens-based collecting system and transmitted via optical fiber to the remote detection unit. Simplicity and applicability of the concept are demonstrated by the combination of commercially available sapphire tubes with a common optical pyrometer. Radiation thermometers with sapphire tubes as invasive probes can be useful for applications requiring immunity to electromagnetic interference, resistance to harsh environments, simple replacement in the case of failure, and enhanced mechanical firmness, enabling wider range probe positioning inside the medium of interest.

Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
22036787
Resource Type:
Journal Article
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 50; Journal Issue: 36; Other Information: (c) 2011 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6935
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CAVITIES; DETECTION; IMMUNITY; INTERFERENCE; LENSES; MONOCRYSTALS; OPTICAL FIBERS; OPTICAL PYROMETERS; PROBES; SAPPHIRE; SURFACES; THERMAL RADIATION; THERMOMETERS; TUBES

Citation Formats

Ruzicka, Jakub, Houzvicka, Jindrich, Bok, Jiri, Praus, Petr, and Mojzes, Peter. Single-crystal sapphire tubes as economical probes for optical pyrometry in harsh environments. United States: N. p., 2011. Web. doi:10.1364/AO.50.006599.
Ruzicka, Jakub, Houzvicka, Jindrich, Bok, Jiri, Praus, Petr, & Mojzes, Peter. Single-crystal sapphire tubes as economical probes for optical pyrometry in harsh environments. United States. https://doi.org/10.1364/AO.50.006599
Ruzicka, Jakub, Houzvicka, Jindrich, Bok, Jiri, Praus, Petr, and Mojzes, Peter. Tue . "Single-crystal sapphire tubes as economical probes for optical pyrometry in harsh environments". United States. https://doi.org/10.1364/AO.50.006599.
@article{osti_22036787,
title = {Single-crystal sapphire tubes as economical probes for optical pyrometry in harsh environments},
author = {Ruzicka, Jakub and Houzvicka, Jindrich and Bok, Jiri and Praus, Petr and Mojzes, Peter},
abstractNote = {One-end-sealed single-crystal sapphire tubes are presented as a simple, robust, and economical alternative for bulky lightpipe probes. Thermal radiation from a blackbody cavity created at the inner surface of the sealed end is gathered by a simple lens-based collecting system and transmitted via optical fiber to the remote detection unit. Simplicity and applicability of the concept are demonstrated by the combination of commercially available sapphire tubes with a common optical pyrometer. Radiation thermometers with sapphire tubes as invasive probes can be useful for applications requiring immunity to electromagnetic interference, resistance to harsh environments, simple replacement in the case of failure, and enhanced mechanical firmness, enabling wider range probe positioning inside the medium of interest.},
doi = {10.1364/AO.50.006599},
url = {https://www.osti.gov/biblio/22036787}, journal = {Applied Optics},
issn = {0003-6935},
number = 36,
volume = 50,
place = {United States},
year = {2011},
month = {12}
}