skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: PNNL/Euratom glass fiber optic, spent fuel neutron profile measurement system

Abstract

The glass fiber optic spent fuel neutron profile measurement system is designed to measure the neutron profile of a Castor with high reproducibility and to distinguish spent fuel Castor contents from vitrified waste Castor contents. The basic principle of the detector is that the glass fibers detect thermal neutrons. The glass is loaded with lithium enriched in Li-6, which has a high thermal neutron cross-section. A neutron is captured by the Li-6 and a He-4 and H-3 are created. Because the glass also contains Cerium in a 3{sup +} ionization state, the excitation caused by the movement of the He-4 and H-3 results in the emission of light from the cerium atoms. This light then travels to the ends of the fiber where it is detected by photon sensitive devices (e.g., photo-multiplier tubes).

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab., Richland, WA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
751957
Report Number(s):
PNNL-13003
R&D Project: 25853; TRN: US0003169
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 3 Mar 2000
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; SPENT FUELS; RADIOISOTOPE SCANNERS; NEUTRON DETECTION; FIBER OPTICS; DESIGN; HIGH-LEVEL RADIOACTIVE WASTES; WASTE FORMS; THERMAL NEUTRONS; PERFORMANCE

Citation Formats

Bowyer, SM, and Smart, JE. PNNL/Euratom glass fiber optic, spent fuel neutron profile measurement system. United States: N. p., 2000. Web. doi:10.2172/751957.
Bowyer, SM, & Smart, JE. PNNL/Euratom glass fiber optic, spent fuel neutron profile measurement system. United States. doi:10.2172/751957.
Bowyer, SM, and Smart, JE. Fri . "PNNL/Euratom glass fiber optic, spent fuel neutron profile measurement system". United States. doi:10.2172/751957. https://www.osti.gov/servlets/purl/751957.
@article{osti_751957,
title = {PNNL/Euratom glass fiber optic, spent fuel neutron profile measurement system},
author = {Bowyer, SM and Smart, JE},
abstractNote = {The glass fiber optic spent fuel neutron profile measurement system is designed to measure the neutron profile of a Castor with high reproducibility and to distinguish spent fuel Castor contents from vitrified waste Castor contents. The basic principle of the detector is that the glass fibers detect thermal neutrons. The glass is loaded with lithium enriched in Li-6, which has a high thermal neutron cross-section. A neutron is captured by the Li-6 and a He-4 and H-3 are created. Because the glass also contains Cerium in a 3{sup +} ionization state, the excitation caused by the movement of the He-4 and H-3 results in the emission of light from the cerium atoms. This light then travels to the ends of the fiber where it is detected by photon sensitive devices (e.g., photo-multiplier tubes).},
doi = {10.2172/751957},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {3}
}