scholarly journals Instrumental Photon Activation Analysis with Short-Time Irradiation for Geochemical Research

Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 617
Author(s):  
Ivana Krausová ◽  
Jiří Mizera ◽  
Zdeněk Řanda ◽  
David Chvátil ◽  
Pavel Krist
Keyword(s):  
Activation Analysis ◽  
Photon Activation Analysis ◽  
Photon Activation ◽  
Photonuclear Reactions ◽  
Geological Samples ◽  
Element Analysis ◽  
Analytical Scheme ◽  
Long Time ◽  
Short Time

This paper introduces instrumental photon activation analysis (IPAA) utilizing short-lived products of photonuclear reactions, mainly (γ, n) and (γ, p), initiated by bremsstrahlung from the MT-25 microtron. A rapid nondestructive IPAA method for geochemical major element analysis is introduced as a tool for the basic geochemical characterization of rocks. Procedures were developed and parameters such as beam energy and irradiation-decay-counting times optimized with a representative set of geochemical reference materials, and an optimized scheme was applied in analysis of various geological samples. A complete analytical scheme combined with long-time irradiation IPAA and the possibility of utilization of photoexcitation reactions (γ, γ′) are briefly outlined.

scholarly journals Non-Destructive Photon Activation Analysis in Paleontology

Proceedings ◽  
2018 ◽  
Vol 2 (10) ◽  
pp. 564
Author(s):  
Tyler C. Borgwardt
Keyword(s):  
Activation Analysis ◽  
Trace Element Analysis ◽  
Photon Activation Analysis ◽  
Physical Characteristics ◽  
Analysis Tool ◽  
Photon Activation ◽  
Sample Type ◽  
Element Analysis ◽  
Non Destructive ◽  
Destructive Methods

Paleontological samples are rare and non-renewable, which makes the study of their chemical or physical characteristics require non-destructive methods. Physical characteristics are routinely studied with non-destructive methods; however, chemical studies tend to require destructive methods unless samples are very small or only the surface compositions are of interest. One potential technique for non-destructive elemental analysis is photon activation analysis (PAA). PAA is a versatile, broad-spectrum, multi-element analysis tool with low sensitivities, capable of analyzing large samples without any alteration, preserving the physical characteristics. Recent work has applied PAA to fossils and their source matrices in an attempt to correlate provenance through trace element analysis. PAA was shown to be non-consumptive and able to identify 20+ elements in samples with sub-ppm sensitivities. From that work, several lessons were learned and the non-destructivity of the technique was better characterized. PAA doesn’t have one standardized methodology, as it varies depending on the sample type. As such, from the lessons learned from the previous research, a standard method of applying PAA non-destructively to paleontological samples has been developed and will be presented in the following paper.

Characterization of Old Nuclear Waste Packages Coupling Photon Activation Analysis and Complementary Non-Destructive Techniques

2014 ◽  
Vol 61 (4) ◽  
pp. 2137-2143 ◽  
Author(s):  
Frederick Carrel ◽  
Bruno Charbonnier ◽  
Romain Coulon ◽  
Frederic Laine ◽  
Stephane Normand ◽  
...  
Keyword(s):  
Activation Analysis ◽  
Nuclear Waste ◽  
Photon Activation Analysis ◽  
Photon Activation ◽  
Non Destructive ◽  
Non Destructive Techniques

Nitrogen assay in winter wheat by short-time instrumental photon activation analysis and its comparison with the Kjeldahl method

2018 ◽  
Vol 317 (1) ◽  
pp. 479-486 ◽  
Author(s):  
Marcela Mádlíková ◽  
Ivana Krausová ◽  
Jiří Mizera ◽  
Jan Táborský ◽  
Oldřich Faměra ◽  
...  
Keyword(s):  
Activation Analysis ◽  
Winter Wheat ◽  
Photon Activation Analysis ◽  
Photon Activation ◽  
Kjeldahl Method ◽  
Short Time
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