RADON CONCENTRATION MEASUREMENT IN WATER BY MEANS OF ALPHA-LIQUID-SCINTILLATION SPECTROMETRY WITH A PERALS SPECTROMETER

Authors
HAMANAKA S SHIZUMA K WEN XQ IWATANI K HASAI H
Citation
S. Hamanaka et al., RADON CONCENTRATION MEASUREMENT IN WATER BY MEANS OF ALPHA-LIQUID-SCINTILLATION SPECTROMETRY WITH A PERALS SPECTROMETER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 410(2), 1998, pp. 314-318
Citations number
7
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
410
Issue
2
Year of publication
1998
Pages
314 - 318
Database
ISI
SICI code
0168-9002(1998)410:2<314:RCMIWB>2.0.ZU;2-E
Abstract
A high-resolution a liquid-scintillation spectrometer, PERALS, has bee n applied to the measurement of radon concentration in water. The effi ciency calibration has been performed for the 5.49 MeV alpha-rays from Rn-222 incorporated with a solvent extraction. Optimum conditions of the solvent extraction for radon have been investigated, and a volumet ric ratio of 3 ml scintillator against 1 l sample water was adopted. T he lower detection limit was estimated to be 0.68 Bq l(-1) (3 sigma) i n water, Applications of this method to ground and spring water sample s have been given compared with those results by the gamma-ray spectro metry method. (C) 1998 Elsevier Science B.V. All rights reserved.