Nondestructive assay of fluorine in geological and other materials by instrumental photon activation analysis with a microtron

Krausová, Ivana; Mizera, Jiří; Řanda, Z.; Chvátil, David; Krist, Pavel

doi:10.1016/j.nimb.2014.09.023

Cited by 14 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The red color map represents the normalized activation rate obtained for laser-driven sources. The isolines correspond to the normalized activation rate that can be obtained with some existing conventional accelerators for PAA (reported electron energies and currents from literature 68,71 ). The value of the normalized activation rate for each isoline is reported on the right side of the plot.…”

Section: Resultsmentioning

confidence: 99%

Superintense laser-driven photon activation analysis

et al. 2021

View full text Add to dashboard Cite

Laser-driven radiation sources are attracting increasing attention for several materials science applications. While laser-driven ions, electrons and neutrons have already been considered to carry out the elemental characterization of materials, the possibility to exploit high-energy photons remains unexplored. Indeed, the electrons generated by the interaction of an ultra-intense laser pulse with a near-critical material can be turned into high-energy photons via bremsstrahlung emission when shot into a high-Z converter. These photons could be effectively exploited to perform Photon Activation Analysis (PAA). In the present work, laser-driven PAA is proposed and investigated. We develop a theoretical approach to identify the optimal experimental conditions for laser-driven PAA in a wide range of laser intensities. Lastly, exploiting the Monte Carlo and Particle-In-Cell tools, we successfully simulate PAA experiments performed with both conventional accelerators and laser-driven sources. Under high repetition rate operation (i.e. 1−10 Hz) conditions, the ultra-intense lasers can allow performing PAA with performances comparable with those achieved with conventional accelerators. Moreover, laser-driven PAA could be exploited jointly with complementary laser-driven materials characterization techniques under investigation in existing laser facilities.

show abstract

Section: Resultsmentioning

confidence: 99%

Superintense laser-driven photon activation analysis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Experimental details including the list of determinable elements and associated uncertainties have been described in Řanda et al (2007) or Mizera and Řanda (2010). Fluorine was determined using a non-destructive IPAA method described in Krausová et al (2015). For the quality control of analytical data, the USGS AGV-1 (andesite) and USGS GSP-2 (granodiorite) reference rock materials were simultaneously analysed.…”

Section: Methodsmentioning

confidence: 99%

Geochemical constraints on the origin of phonolites from the Lužické hory Mts., the Ohře (Eger) Rift, Bohemian Massif

Krmíčková

Krmíček

Řanda

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

Geochemical and petrological data are reported for phonolites of the Lužické hory Mts. in the northeastern part of the Ohře (Eger) Rift near the junction with the Lusatian Fault. The phonolites of the Lužické hory Mts. are enriched in incompatible trace elements such as Rb, REEs, Zr, Hf, U, Th, Nb, Ta and volatile components such as F and Cl. The phonolites are significantly impoverished in Ti and P and partly also in Sr and Ba contents. The K-Ar dating of phonolites provided scattered ages in the range of 34.2 ± 1.4 to 26.7 ± 1.1 Ma. Two geochemically different phonolite types were recognized. Phonolites of type A (higher Sr > 90 ppm, Ba > 130 ppm) have following initial Sr–Nd isotope characteristics: 87Sr/86Sr = 0.7032–0.7094; εNd = 3.0–3.4, similar to those known from phonolites of the nearby České středohoří Mts. Prevailing phonolites of type B (lower Sr < 20 ppm, Ba < 60 ppm) are decoupled and show a broad range of initial 87Sr/86Sr ratios (up to 0.7142) at narrow εNd (3.2–3.9). Both phonolite types are characterized by relatively restricted variations in 206Pb/204Pb (19.2–19.5), 207Pb/204Pb (15.61–15.66) and 208Pb/204Pb (39.07–39.30), indicating their derivation from a similarly metasomatically enriched mantle source. The geochemical characteristics of the phonolites can associate with various (i) lower and higher clinopyroxene and feldspar crystallization of primary basanitic magma, (ii) degree of assimilation-fractional crystallization (AFC) processes during the magma ascent, and/or (iii) late-magmatic to post-magmatic hydrothermal contribution of incompatible elements.

show abstract

“…The electron beam energy (i.e. the maximum photon energy) was set at 17 MeV based on optimization carried out for fluorine assay , which utilizes a reaction with a similar threshold energy (cf. in Table ).…”

Section: Methodsmentioning

confidence: 99%

Non-destructive determination of nitrogen in malting barleys by instrumental photon activation analysis and its comparison with the Dumas method

et al. 2018

Self Cite

View full text Add to dashboard Cite

Instrumental photon activation analysis (IPAA) was used to measure the nitrogen content of malting barleys used in brewing and breeding in the Czech Republic. The study compares the fast and non‐destructive IPAA method with the classical Dumas method requiring combustion of the sample. The IPAA procedure for nitrogen assay is based on measuring the positron–electron annihilation γ line at 511 keV from the photoactivation product 13N, which is interfered with by other positron emitting nuclides. Interference from 15O can be eliminated by counting after a sufficient decay time. Interferences from 34mCl and 38K can be corrected via measuring their specific γ lines at 146.4 and 2167.7 keV, respectively. The IPAA procedure has been verified by analysis of several biological reference materials and is suitable for nitrogen measurement in cereals and other plant materials with a detection limit down to 10−2 wt%. Nitrogen contents in malting barleys ranged from 1.4 to 2.2 wt% and were dependent on the cereal variety and growth conditions (fertilizer use and chemical protection). Copyright © 2018 The Institute of Brewing & Distilling

show abstract

Nondestructive assay of fluorine in geological and other materials by instrumental photon activation analysis with a microtron

Cited by 14 publications

References 22 publications

Superintense laser-driven photon activation analysis

Superintense laser-driven photon activation analysis

Geochemical constraints on the origin of phonolites from the Lužické hory Mts., the Ohře (Eger) Rift, Bohemian Massif

Non-destructive determination of nitrogen in malting barleys by instrumental photon activation analysis and its comparison with the Dumas method

Contact Info

Product

Resources

About