研究目的
Investigating the feasibility and accuracy of remote gamma-heating measurements using a fibered optically stimulated luminescent dosimeter (OSLD) system in low-power reactors.
研究成果
The fibered OSLD system demonstrated good agreement with standard OSLD pellets, with measurements reproducible within 3%. Future improvements could reduce readout time and enable online measurements during irradiation.
研究不足
The readout procedure requires withdrawing the OSLD off the gamma flux, and the readout time is quite long for online applications. The system's performance at higher doses needs further calibration.
1:Experimental Design and Method Selection:
The study involved the use of a fibered OSLD system for remote gamma-heating measurements in the EOLE zero-power reactor. The system includes an OSLD crystal connected to an optical fiber and a laser stimulation system.
2:Sample Selection and Data Sources:
Three fibered sensors were calibrated in a pure gamma field using a 60Co source. Measurements were also compared with standard OSLD pellets.
3:List of Experimental Equipment and Materials:
The setup included an OSLD crystal, optical fiber, diode-pumped solid-state laser, photomultiplier tube, and optical filters.
4:Experimental Procedures and Operational Workflow:
The OSLD crystal was remotely stimulated via the optical fiber, and the emitted OSL light was collected and analyzed to determine the absorbed dose.
5:Data Analysis Methods:
The OSL signals were corrected for background noise and integrated to provide absorbed doses using calibration coefficients.
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