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In-Situ Radio-Luminescence from Sapphires Under Fission Reactor Irradiation

Shikama, T
Associate Professor, Research Associate, Professor,Institute for Materials Research, Tohoku University,

Kakuta, T
Researcher,Tokai Research Establishment, Japan Atomic Energy Research Institute,

Narui, M
Associate Professor, Research Associate, Professor,Institute for Materials Research, Tohoku University,

Sagawa, T
Technical Staff,Oarai Research Establishment, Japan Atomic Energy Research Institute,

Jensen, BFH
Doctor Student, Professor,Department of Engineering, University of Tokyo,

Nakazawa, S
Doctor Student, Professor,Department of Engineering, University of Tokyo,

Kayano, H
Associate Professor, Research Associate, Professor,Institute for Materials Research, Tohoku University,

Pages: 10    Published: Jan 1999

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Source: STP1325-EB

Abstract

Radio-luminescence from the sapphire was detected in-situ under the reactor irradiation using the silica core optical fiber. The radio-luminescence peaks at 420, 690, and 860nm, and broad band in 700–1200nm were identified. However, these radio-luminescence peaks and band became obscure as the reactor power went up, due to the increase of the specimen temperatures and to the interference of the strong radio-luminescence from the silica core optical fiber itself. The effect of the applied electric field on the radio-luminescence was studied. Change was observed due to the electric field but it was very small. Further study and a better-controlled experiments will be needed to clarify the effect.

Keywords:
sapphire, radio-luminescence, in-situ measurement, reactor irradiation, electric field

Paper ID: STP13921S
Committee/Subcommittee: E10.07
DOI: 10.1520/STP13921S
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