Operations, Information and Decisions Papers

Document Type

Journal Article

Date of this Version

7-21-2003

Publication Source

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume

507

Issue

3

Start Page

680

Last Page

690

DOI

10.1016/S0168-9002(03)01362-7

Abstract

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.

Copyright/Permission Statement

© . This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

KamLAND, low background, neutrino oscillations, NAA, trace element, liquid scintillator

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Date Posted: 27 November 2017

This document has been peer reviewed.