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Scintillating Glass Fiber-Optic Neutron Sensors

Published online by Cambridge University Press:  21 February 2011

K.H. Abel ,
R.J. Arthur ,
M. Bliss ,
D.W. Brite ,
R.L. Brodzinski ,
R.A. Craig ,
B.D. Geelhood ,
D.S. Goldman ,
J.W. Griffin  and
R.W. Perkins
...Show all authors
K.H. Abel
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
R.J. Arthur
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
M. Bliss
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
D.W. Brite
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
R.L. Brodzinski
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
R.A. Craig
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
B.D. Geelhood
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
D.S. Goldman
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
J.W. Griffin
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
R.W. Perkins
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
P.L. Reeder
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
W.C. Richey
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
K A. Stahl
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
D.S. Sunberg
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
R.A. Warner
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
M. J. Weber
Affiliation:
Lawrence Livermore National Laboratory, Box 808, Livermore, CA 94551
N.A. Wogman
Affiliation:
Pacific Northwest Laboratory, Box 999, Richland, WA 99352
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Abstract

Pacific Northwest Laboratory (PNL) has fabricated cerium-activated lithium silicate scintillating fibers via a hot-downdraw process. These fibers, which, as produced, typically have a transmission length (e−1 length) of greater than 2 meters, are found to undergo aging when subjected to room air. The aging, which is complete in a few weeks, reduces the transmission length to the order of 0.5 meter. Because of the high alkali content of the glass (on the order of 20-30 mole % lithia), we have attributed this aging to aqueous corrosion at the polymer cladding/glass interface. Changes in transmission with chemical treatment of the surface support the corrosion model. Fiber transmission performance has been preserved by modifying the hot-downdraw to a double crucible to produce glass-on-glass waveguides.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 348 , 1994 , 203
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

1. Spector, G.B. et al. , Nucl. Inst. Meth. 326, 526 (1993).Google Scholar
2. Atkinson, M. et al. , Nucl. Inst. and Meth. A254, 500 (1987).Google Scholar
3. Abel, K. H. et al. ; Proceedings of SciFi93: Workshop on Scintillating Fiber Detectors; October 24-28, 1993; Notre Dame, IN; World Press, in press.Google Scholar