Journal of Radioanalytical and Nuclear Chemistry Journal of Radioanalytical and Nuclear Chemistry RSS feedThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Estimation of background radiation in the indoor air in geo-sensitive zones of the Garhwal Himalaya, India
AbstractThe study assesses environmental background radiation from radon, thoron, and thoron decay products across distinct geological settings in the Garhwal Himalaya region by using RADUET, CR-39 plastic track detectors, and deposition-based thoron (220Rn)progeny detectors. The measurements were conducted indoors throughout the winter, summer, and rainfall seasons during the year 2013. The annual inhalation doses from220Rn progenies ranged between 0.83 and 2.99  mSv y−1, averaging 1.94  mSv y−1. The annual effective dose (AED), reflecting biological radiation impact, varied from 0.58 to 2.78  mSv y−1, with an av...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 13, 2024 Category: Nuclear Medicine Source Type: research

Investigating sol –gel matrix loading capacity toward producing surrogate nuclear explosive debris with realistic composition
AbstractPost detonation nuclear forensic materials which resemble the size, color, elemental composition, and radionuclide content of real nuclear debris would be valuable for developing and validating new nuclear forensic techniques. As nuclear fallout types vary significantly, the ability to tailor each of these parameters accurately is desired to produce materials capable of testing analytical methods under a wide array of forensic scenarios. Sol –gel synthesis techniques can provide tunability of size, shape and composition for producing a wide variety of solid nuclear forensics benchmarking materials. The sol–gel ...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 12, 2024 Category: Nuclear Medicine Source Type: research

Synchrotron investigations in environmental radiochemistry research
AbstractOver the past decades, environmental radionuclide research using innovative X-ray spectroscopy techniques in combination with other analytical/spectroscopic methods and quantum chemical and atomistic modelling has helped improve scientific understanding of radiochemical processes important for numerous application areas and secure basic knowledge of relativistic (many electron) heavy elements. Examples of x-ray absorption and fluorescence spectroscopic techniques applied to a range of 4f/5f element systems are presented which aim to demonstrate the evolution in the field. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - January 11, 2024 Category: Nuclear Medicine Source Type: research

Extension of recommended cross section database for production of therapeutic isotopes
AbstractRadionuclide-based diagnostics and therapy require proper selection of production nuclear reaction based on knowledge of the production excitation functions and the achievable yields completed with data on the formation of possible impurities. In the present work the existing IAEA recommended cross section data database for production of therapeutic isotopes is extended to production of the47Sc,47Ca(47Sc),58mCo,71As(71Ge),71Ge,77Br,  77Kr(77Br),80mBr,  103Pd,103Pd(103mRh),103Ru(103mRh),105Rh,117mSn,119Sb,119mTe(119Sb),  134Ce,135La,  149gTb,161Tb,165Er,165Tm(165Er),167Tm,197mHg,197gHg,198gAu, and230Pa(230U) rad...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

pyEGAF: Modernization of the EGAF database
AbstractOne of the most comprehensive resources for thermal neutron-capture data is the Evaluated Gamma-ray Activation File (EGAF), containing data from prompt gamma activation analysis measurements carried out at the Budapest Research Reactor for 245 isotopes. Although these valuable datasets have been freely available for many years, the outdated and cryptic adopted format makes it difficult to utilize the data and it is not generally suitable for modern computational technologies. To help overcome these challenges, we have converted the datasets into an open standard JSON format. Additionally, we have developed a Python...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

Development and applications of accelerator mass spectrometry methods for measurement of 14C, 10Be and 26Al in the CENTA laboratory
AbstractTerrestrial and extraterrestrial radioisotope research has been strongly dependent on the development of analytical methods which would enable to trace radioisotopes at low concentrations in subgram samples (e.g., in tree rings, ice cores, meteorites, etc.). Accelerator mass spectrometry (AMS) has become the most sensitive technique for ultralow-level analysis of long-lived radioisotopes, such as14C,10Be and26Al. We review developments and applications carried out in the CENTA laboratory, and describe a recently installed fully equipped AMS line, designed for analysis of long-lived radioisotopes from tritium to cur...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

Polonium-210 in total diet: a case study from Kuwait
AbstractThe activity concentrations of210Po have been determined in the most consumed Kuwaiti diet components including water and beverages. The total210Po annual intake has been calculated and was around 97.5  ± 4.1 Bq y−1 with roughly equal contributions from fish and seafood, grains, beverages, and protein (20.5  ± 0.2, 18.7 ± 0.2, 18.1 ± 1.1, and 16.7 ± 1.0 Bq y−1 sequentially). The annual intake of210Po was estimated by taking into account the loss of210Po during the cooking of seafood, tea making, and the preparation of leafy vegetable samples. The annual committed effective dose due ...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

The distinct conditions of atmospheric and underground nuclear tests revealed by Zn isotopic compositions of nuclear debris samples
AbstractWe analyzed the Zn isotopic compositions of nuclear debris samples from atmospheric and underground nuclear tests. Samples from the site of atmospheric tests exhibit a range of Zn isotopic fractionation ( δ66ZnJMC-Lyon = 0.23–0.86 ‰) while samples from underground tests exhibit Zn isotopic compositions with minimal variation among samples and from terrestrial igneous rock standards (δ66ZnJMC-Lyon = 0.28–0.39 ‰). The larger range of δ66ZnJMC-Lyon observed in atmospheric test samples relative to underground test samples is likely the result of the open system characteristics of atmospheric nuclear ...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

Towards a re-determination of the 42Ar half-life
We report on a new measurement of the half-life of42Ar by following its decay over a time period of more than 13  years using γ-ray spectrometry. The obtained value of (39.5 ± 3.6) y confirms the only other, previously measured value of (33 ± 2) y. However, since partial outgassing of the accumulated Ar from the sample cannot be excluded, this value should be understood as a lower limit. The samp le has now been stored in a gas-tight quartz ampoule to enable further measurements excluding the outgas effect in order to confirm our finding. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

Effects of uranium metal carbon content on hydriding kinetics and corrosion blister number/area at sub-ambient pressures
AbstractCarbon is a common impurity in uranium metal, resulting in a number of uranium –carbon inclusion phases that contribute to an increase in metal defect density as carbon content increases. It is widely held that uranium hydride corrosion preferentially nucleates at these defect sites, and that an increase in carbon content will therefore represents an increase in uranium hydr ide corrosion sites on the metal surface. We hydrided six uranium sources with differing carbon contents to explore whether this assumption holds in a sub-ambient (~ 0.1 atm hydrogen), sealed environment, and report the resulting reaction ...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

230Th heterogeneity in a CMX-7 depleted uranium metal sample
AbstractLA-(QQQ)ICP-MS was used to investigate the sources of inconsistent230Th/234U radiochronometry results obtained during CMX-7 for depleted uranium (DU) oxide powder, ES-1, and DU metal, ES-4, samples. The stability of the (QQQ)ICP-MS was greatly improved using a modified “broad peak” technique to enable a more precise and accurate analysis of the samples. Whereas ES-1 was found to be homogeneous in both U and Th, ES-4 was homogeneous in U but inhomogeneous in Th. The ratio of230Th/234U decreased with depth of the metal sample, whereas234U/235U remained constant, leading to an apparently higher age on the surface ...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

Correction to: Resonance ionization of zirconium
(Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - January 9, 2024 Category: Nuclear Medicine Source Type: research

New directions in nuclear data research for accelerator-based production of medical radionuclides
This article gives an overview of on-going nuclear data research utilizing charged-particle accelerators in four directions, namely low-energy region, intermediate energy range, use of the α-particle beam, and utilization of fa st neutrons generated at accelerators. Wherever possible, a comparison of experimental data with theoretical estimates is presented and evaluated (standardised) data, if available, are also briefly discussed. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - January 8, 2024 Category: Nuclear Medicine Source Type: research

The role of gamma-ray spectrometry and Monte Carlo simulation in the characterisation of meteorites
AbstractGamma-ray spectrometry has proved to be a powerful tool in meteorite identification due to the presence of certain mid- and long-lived cosmogenic radionuclides in such samples. In particular, this technique can be made totally non-destructive by measuring each sample as-it-is and calculating the full-energy-peak efficiency through Monte Carlo simulation of the full radionuclide decay. In general, this framework can be applied whenever it is needed to characterise non-destructivery the γ-ray emission of a sample with non-standard geometry. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - January 8, 2024 Category: Nuclear Medicine Source Type: research

Low-level tritium measurements in freshwater and seawater samples
AbstractThe aim of this study was to test two potential tritium determination methods (with and without electrolysis enrichment) suitable for low-level measurements. Both methodologies were applied to water samples from the Baltic Sea and ten Polish rivers providing new data on tritium activity concentration. Optimization steps carried out to the standard method lowered minimum detectable activity concentration (MDC) from 3.1 to 1.8  Bq L–1 (at 95% confidence level) enabling to apply it to environmental water samples. However, electrolytic enrichment method of MDC of 0.20  Bq L–1 provided more accurate results for ...
Source: Journal of Radioanalytical and Nuclear Chemistry - January 4, 2024 Category: Nuclear Medicine Source Type: research