Date of this Version
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
A technique based on neutron activation has been developed for an extremely high sensitivity analysis of trace elements in organic materials. Organic materials are sealed in plastic or high-purity quartz and irradiated at the HFIR and MITR. The most volatile materials such as liquid scintillator (LS) are first preconcentrated by clean vacuum evaporation. Activities of interest are separated from side activities by acid digestion and ion exchange. The technique has been applied to study the liquid scintillator used in the KamLAND neutrino experiment. Detection limits of <2.4×10−15 g 40K/g LS, <5.5×10−15 g Th/g LS, and <8×10−15 g U/g LS have been achieved.
© . This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
KamLAND, low background, neutrino oscillations, NAA, trace element, liquid scintillator
Djurcic, Z., Glasgow, D., hu, L., McKeown, R., Piepke, A., Swinney, R., & Tipton, B. (2003). Novel Technique for Ultra-Sensitive Determination of Trace Elements in Organic Scintillators. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 507 (3), 680-690. http://dx.doi.org/10.1016/S0168-9002(03)01362-7
Date Posted: 27 November 2017
This document has been peer reviewed.