Efficiency calibration of energy-dispersive detectors for application in quantitative x- and γ-ray spectrometry

I. Szalóki, S. Szegedi, K. Varga, M. Braun, J. Osán, R. Van Grieken

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A semi-empirical method was used in a full-peak efficiency calculation procedure; it was based on the measurements of characteristic x-ray lines of pure elemental and compound samples and on the application of the fundamental parameter method (FPM) for the theoretical calculation of the characteristic x-ray intensities. Radioactive standards were applied for the efficiency calibration of different semiconductor detectors [Si(Li), Si-PIN and HpGe]. The efficiency curves were fitted to the characteristic intensities measured by a conventional Si(Li) and two Si-PIN detectors, using 125I and 55Fe radioactive sources for x-ray excitation in a ring-shaped geometrical arrangement. Several quantitative applications in x- and γ-ray spectrometry were carried out with these calibrated detectors: (i) x-ray fluorescence (XRF) analysis of sediment samples [Si(Li)], (ii) determination of specific activity of 137Cs nuclide in sediment core samples originated from an oxbow area of the river Tisza, using γ-spectroscoPy (HpGe) with low-background conditions, (iii) study of electrosorption phenomena at solid-liquid interfaces by making use of an in situ radiotracer method based on the application of low-energy x-ray emitting radionuclides (e.g. 65Zn), (iv) quantitative XRF analysis of ceramic glaze and (v) electron microprobe analysis of aerosol particles using an instrument equipped with a thin-window Si(Li) detector.

Original languageEnglish
Pages (from-to)49-55
Number of pages7
JournalX-Ray Spectrometry
Volume30
Issue number1
DOIs
Publication statusPublished - Jan 2001

Fingerprint

Spectrometry
Calibration
Detectors
X rays
Sediments
Fluorescence
Semiconductor detectors
Glazes
Core samples
Electron probe microanalysis
Aerosols
Radioisotopes
Isotopes
Rivers
Spectroscopy
Liquids

ASJC Scopus subject areas

  • Spectroscopy

Cite this

Efficiency calibration of energy-dispersive detectors for application in quantitative x- and γ-ray spectrometry. / Szalóki, I.; Szegedi, S.; Varga, K.; Braun, M.; Osán, J.; Van Grieken, R.

In: X-Ray Spectrometry, Vol. 30, No. 1, 01.2001, p. 49-55.

Research output: Contribution to journalArticle

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