Thermal neutron response of the Li2B4O7:Cu TL dosimeter |
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Affiliation: | 1. Department of Chemistry, Dr.Ambedkar Government Arts College,Chennai600039, Tamil Nadu, India;2. Department of Chemistry, St.Joseph''s College of Engineering, Chennai600 119, Tamil Nadu, India |
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Abstract: | A measurement of the thermal neutron response of the Li2B4O7:Cu TLD has been conducted. The results obtained using the Panasonic UD-806 dosimeter and UD-854A holder yield a free-in-air response of 3.3±0.1 R 60Co equivalent per mSv of thermal neutrons. A thermal neutron response of over 7 R 60Co equivalent per mSv was observed when the dosimeter was irradiated on water phantoms. The high sensitivity may result in a substantial overestimate of the gamma dose equivalent if the TLD is used in a mixed neutron and gamma environment of unknown ratio. Measurements of the Li2B4O7:Cu glow curve, TL saturation curve and the thermal neutron response dependence of the dosimeter filtration thickness are also presented. |
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