Preparation and characterisation of ceramic-based thoron sources for thoron calibration chamber

A. Csordás, F. Fábián, M. Horváth, M. Hegedus, J. Somlai, T. Kovács

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The aim of this study is to explore the correlations between the properties of the source's material and the thoron flux produced. This means a complex procedure that involves morphological characterisation (the determination of specific surface area and pore size distribution) and thoron emanation and exhalation measurements as well. In this work, the preparation of 27 thoron sources has been carried out. Three types of ceramics with different morphological properties were used as a matrix material with three different thorium contents. Spheres were formed from the dollop, and they were fired at different temperatures (200, 600 and 900°C). The phase analysis of the samples was performed by powder X-ray diffraction. The pore size distribution was determined by mercury penetration. The thoron emanation was measured using an accumulation chamber; the measured thoron emanation coefficients were from 0.34 ± 0.03 to 7.69 ± 0.13 %. Based on the results, the preparation parameters of the thoron source optimised for the calibration procedure have been given.

Original languageEnglish
Pages (from-to)151-154
Number of pages4
JournalRadiation Protection Dosimetry
Volume167
Issue number1-3
Publication statusPublished - Nov 1 2015

Fingerprint

radon isotopes
Ceramics
Calibration
chambers
ceramics
Thorium
Exhalation
preparation
Mercury
X-Ray Diffraction
Powders
Temperature
exhalation
porosity
matrix materials
thorium
penetration
coefficients
diffraction

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Radiation
  • Public Health, Environmental and Occupational Health

Cite this

Preparation and characterisation of ceramic-based thoron sources for thoron calibration chamber. / Csordás, A.; Fábián, F.; Horváth, M.; Hegedus, M.; Somlai, J.; Kovács, T.

In: Radiation Protection Dosimetry, Vol. 167, No. 1-3, 01.11.2015, p. 151-154.

Research output: Contribution to journalArticle

Csordás, A. ; Fábián, F. ; Horváth, M. ; Hegedus, M. ; Somlai, J. ; Kovács, T. / Preparation and characterisation of ceramic-based thoron sources for thoron calibration chamber. In: Radiation Protection Dosimetry. 2015 ; Vol. 167, No. 1-3. pp. 151-154.
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