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1.
A New Gamma-Ray Spectrum Catalog for PGAA 总被引:1,自引:0,他引:1
Zs. Révay G. L. Molnár T. Belgya Zs. Kasztovszky R. B. Firestone 《Journal of Radioanalytical and Nuclear Chemistry》2000,244(2):383-389
A major obstacle to the use of the prompt gamma activation analysis (PGAA) method has so far been the lack of a suitable library. Therefore, new measurements have been performed at the PGAA facility at Budapest Research Reactor (BRR) in order to create a prompt -ray catalog for qualitative and quantitative analysis. Prompt -ray energies and associated k
0-factors have been determined by internal standardization. The resulting catalog contains prompt -ray data from neutron capture and other reactions such as (n,), and decay -ray data from short-lived reaction products. Data have been measured for nearly all stable elements, from hydrogen to uranium. Generally, data for several isotopes are given, to enable isotopic analysis as well. 相似文献
2.
Rodrigues Ana Luísa Marques Rosa Dias Maria Isabel Prudêncio Maria Isabel Russo Dulce Diniz Mariana Martins Andrea Neves César Kasztovszky Zsolt Harsányi Ildiko Szilágyi Veronika Kovács Imre Szőkefalvi-Nagy Zoltán 《Journal of Radioanalytical and Nuclear Chemistry》2022,331(9):3887-3903
Journal of Radioanalytical and Nuclear Chemistry - A contribution to the discussion about Vila Nova de São Pedro (VNSP) as a production centre of symbolic lithic artefacts, the origin of raw... 相似文献
3.
E. Abraham M. Bessou A. Ziéglé M.-C. Hervé L. Szentmiklósi Z. S. Kasztovszky Z. Kis M. Menu 《Applied Physics A: Materials Science & Processing》2014,117(3):963-972
An Eighteenth Dynasty Egyptian sealed pottery stored at the Museum of Aquitaine (Bordeaux, France) has been investigated using terahertz radiation, X-rays and neutrons. THz computed tomography revealed nondestructively the presence of content, whereas X-rays and neutrons analyzed more precisely the fabrication process and conservation of the pottery together with the nature of this content owing to higher spatial resolution and contrast. With neutron tomography, we determined the method used to seal the jar as well as the finer structure of the inner content. Neutron-induced prompt gamma spectroscopy was finally applied to measure the elemental composition of the content, which is supposed to consist of dried germinated seeds. 相似文献
4.
Zs. Kasztovszky Zs. Révay T. Belgya G. L. Molnár 《Journal of Radioanalytical and Nuclear Chemistry》2000,244(2):379-382
Since 1996 several applications of prompt gamma activation analysis have been performed at the new Budapest PGAA facility. This paper deals with the investigation of metal objects. We report the results of nondestructive detection of H in amorphous metals, multielement analysis of Roman bronze brooches and measurement of silver concentration in Hungarian coins. 相似文献
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H. R. Marschall Zs. Kasztovszky K. Gméling R. Altherr 《Journal of Radioanalytical and Nuclear Chemistry》2005,265(2):339-348
Summary High-pressure metamorphic rocks showing a large range of chemical compositions were analyzed by PGNAA, XRF and solution ICP-MS for major components and a variety of trace elements. The large data set allowed a comparison of results from PGNAA to the established methods and revealed good agreement for most major elements and for Sc and Gd. For V, Cr, Co and Ni, PGNAA data are satisfactory only at high concentration levels. B, Cl and H were analyzed by PGNAA with very good precision, even at low concentrations. 相似文献
7.
A new gamma-ray spectrum catalog and library for PGAA 总被引:1,自引:0,他引:1
Zs. Révay G. L. Molnár T. Belgya Zs. Kasztovszky R. B. Firestone 《Journal of Radioanalytical and Nuclear Chemistry》2001,248(2):395-399
New measurements have been performed at the PGAA facility at the Budapest Research Reactor (BRR) in order to create a prompt -ray catalog for qualitative and quantitative analysis. The measured spectra were accurately analyzed by HYPERMET-PC. Prompt -ray energies and associated -ray production cross-sections have been determined by internal standardization. The resulting catalog contains prompt -ray data from neutron capture and other reactions such as (n,), and decay -ray data from short-lived reaction products. Data have been measured for nearly all stable elements, from hydrogen to uranium. Generally, data for several isotopes are given, to enable isotopic analysis as well. The whole library, including elemental spectra, will be available as a book. 相似文献
8.
Zs. Sándor S. Tölgyesi I. Gresits Zs. Kasztovszky 《Journal of Radioanalytical and Nuclear Chemistry》2002,254(2):283-288
Isotope excited energy dispersive X-ray fluorescence (EDXRF) was used for the determination of the major components, silver and copper, of ancient coins. A ring shaped 125I source was used for excitation. Various methods were developed and compared for quantitative evaluation in order to eliminate matrix effects and the effects caused by the differences in geometry. The method proposed by the authors ensures determination with acceptable error using certified standard samples of alloys. The results of this method were compared with those of prompt gamma activation analysis (PGAA) and with data from contemporary written sources. 相似文献
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T. Belgya Z. Kis L. Szentmiklósi Zs. Kasztovszky G. Festa L. Andreanelli M. P. De Pascale A. Pietropaolo P. Kudejova R. Schulze T. Materna 《Journal of Radioanalytical and Nuclear Chemistry》2008,276(3):713-718
Prompt gamma activation analysis (PGAA) is a well known tool for non-destructive bulk elemental analysis of objects. The measured
concentrations are only representative of the whole sample if it is homogenous; otherwise it provides only a sort of average
composition of the irradiated part. In this latter case one has to scan the sample to obtain the spatial distribution of the
elements. To test this idea we have constructed a prompt gamma activation imaging — neutron tomograph (PGAI-NT) setup at the
NIPS station of the Budapest Research Reactor, consisting of a high-resolution neutron tomograph and a germanium gamma-spectrometer.
The samples are positioned relative to the intersection of the collimated neutron beam and the projection of the gamma-collimator
(isocenter) by using an xyzω-moving table. 相似文献