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Metrologia, ISSN 0026-1394, 02/2017, Volume 54, Issue 1, pp. 36 - 50
The hypothesis that seasonal changes in proximity to the Sun cause variation of decay constants at permille level has been tested for radionuclides... 
decay constant | neutrino | uncertainty | half-life | Sun | radioactivity | RATES | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | IONIZATION-CHAMBER | Nuclear Experiment | Physics
Journal Article
Metrologia, ISSN 0026-1394, 02/2017, Volume 54, Issue 1, pp. 19 - 35
Claims that proximity to the Sun causes variations of decay constants at the permille level have been investigated for beta-minus decaying nuclides. Repeated... 
decay constant | non-exponential decay | neutrino | half-life | Sun | radioactivity | SOLAR INFLUENCE | PHYSICS, APPLIED | UNCERTAINTIES | CS-137 | PHYSIKALISCH-TECHNISCHE BUNDESANSTALT | RATES | INSTRUMENTS & INSTRUMENTATION | IONIZATION-CHAMBER | Nuclear Experiment | Physics
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 03/2018, Volume 133, pp. 22 - 30
A new method for calculating the detection limits of gamma-ray spectrometry measurements is presented. The method is applicable for gamma-ray emitters,... 
Correlation coefficient | ROI method | Uncertainty | Least-squares method | Background | Detection limit | Gamma-ray spectrometry | Peak analysis | DECISION THRESHOLDS | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR
Journal Article
Physics Letters B, ISSN 0370-2693, 10/2016, Volume 761, Issue C, pp. 281 - 286
The hypothesis that proximity to the Sun causes variation of decay constants at permille level has been tested and disproved. Repeated activity measurements of... 
Decay constant | Uncertainty | Half-life | Sun | Neutrino | Radioactivity | PRIMARY STANDARDIZATION | PHYSIKALISCH-TECHNISCHE BUNDESANSTALT | PERTURBATION | PHYSICS, NUCLEAR | RATES | ASTRONOMY & ASTROPHYSICS | RADIONUCLIDE METROLOGY | SPECTROMETRY | IONIZATION CHAMBERS | PHYSICS, PARTICLES & FIELDS | Astronomy
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 04/2018, Volume 134, pp. 56 - 58
Two effects were identified that induce the dependence of the decision threshold on the uncertainty of the conversion factor. With the first effect, the... 
Conversion factor | Decision threshold | Uncertainty | Null measurement | Indication | Lognormal distribution | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 03/2017, Volume 121, pp. 126 - 130
In gamma-ray spectrometry the measurement threshold describes the lover boundary of the interval of peak areas originating in the response of the spectrometer... 
Gamma-ray spectrometry | Measurement uncertainty | Measurement threshold | Errors of the first kind | NUCLEAR SCIENCE & TECHNOLOGY | RELIABILITY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Gamma rays | Measurement | Analysis | Spectrum analysis
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 12/2016, Volume 118, pp. 1 - 6
Two simple methods for calculating the correlations between peaks appearing in gamma-ray spectra are described. We show how the areas are correlated when the... 
Peak areas | Continuous background | Gamma-ray spectrometry | Least-squares method | Correlation coefficients | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Gamma rays | Statistics
Journal Article
Nuclear Inst. and Methods in Physics Research, A, ISSN 0168-9002, 03/2016, Volume 813, pp. 102 - 110
A method for calculating the decision thresholds for gamma-ray emitters, identified in gamma-ray spectrometric analyses, is described. The method is suitable... 
Blank indication | Decision threshold | Null measurement uncertainty | Gamma-ray spectrometry | INSTRUMENTS & INSTRUMENTATION | SPECTROSCOPY | NUCLEAR SCIENCE & TECHNOLOGY | SPECTROMETRY | PHYSICS, PARTICLES & FIELDS | Gamma rays | Uncertainty | Thresholds | Mathematical analysis | Spectra | Emitters | Decision analysis | Counting
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 11/2015, Volume 105, pp. 60 - 65
When measurement results with values near the decision threshold are being considered, a relative uncertainty of 60% is expected. Since such measurement... 
Decision threshold | Peak-area uncertainties | Gamma-ray spectra | Peak analysis | Type-II errors | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Gamma rays | Analysis
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 03/2016, Volume 109, pp. 518 - 521
In gamma-ray spectrometric measurements the background is usually taken into account by conducting measurements on a blank sample. However, this method is not... 
Multi-gamma-ray emitters | Net indication | Blank sample | Correlations | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Gamma rays | Measurement
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 03/2016, Volume 109, pp. 522 - 525
In the presence of radon daughters, gamma rays from 88Y with energies at 898.0keV or 1836.1keV appear on a high, continuous background or overlap with other... 
Decision threshold | Pile-up effect | Gamma-ray spectrometry | Sum peak | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Gamma rays | Usage | Spectrum analysis
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 04/2018, Volume 134, pp. 51 - 55
A method is presented for calculating the expected number of counts in peaks that have a large relative peak-area uncertainty and appear in measured gamma-ray... 
Systematic influence | Relative uncertainty | Gamma-ray spectrometry | Correction factors | Peak area | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Espectrometria de raigs gamma | Electromagnetisme | Raigs gamma | Àrees temàtiques de la UPC | Física | Gamma ray spectrometry
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 08/2017, Volume 126, pp. 267 - 269
A method for calculating the approximate value of the detection limit for measurements of ionizing radiation is presented. The method can be applied when the... 
Decision threshold | Null measurement uncertainty | Detection limit | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR | Ionizing radiation
Journal Article
Waste Management, ISSN 0956-053X, 07/2019, Volume 94, pp. 27 - 38
•Stabilization procedures affect nutrient and inorganic contaminant concentrations.•Anaerobic sludge has the highest levels of metals and radionuclides.•High P... 
Sewage sludge use | Radionuclides | Recycling | Nutrient recovery | Trace metals | Soil amendment | PHOSPHORUS | PLANT | HEAVY-METALS | ENVIRONMENTAL SCIENCES | AMENDED SOILS | ENGINEERING, ENVIRONMENTAL | LONG-TERM APPLICATION | NITROGEN | WATER | Waste management | Usage | Adsorption | Sludge | Fertilizers
Journal Article
Journal Article
Applied Radiation and Isotopes, ISSN 0969-8043, 04/2020, Volume 158, p. 109063
An account is given on the value of the correlation coefficient between the number of counts in a peak in a gamma-ray spectrum and the number of counts in the... 
Correlation coefficient | Gamma-ray spectrometry | Statistical fluctuations | Least squares method | NUCLEAR SCIENCE & TECHNOLOGY | RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | CHEMISTRY, INORGANIC & NUCLEAR
Journal Article
Nuclear Inst. and Methods in Physics Research, A, ISSN 0168-9002, 10/2015, Volume 797, pp. 271 - 277
This paper presents the results of the tests of High Purity Germanium (HPGe) based gamma spectrometers employed for radioactivity control carried out on a... 
Standardisation | Minimum detectable activity | High Purity Germanium | Monte Carlo | Steel factories | Spectrometer | INSTRUMENTS & INSTRUMENTATION | NUCLEAR SCIENCE & TECHNOLOGY | PHYSICS, NUCLEAR | PHYSICS, PARTICLES & FIELDS | Analysis | Detectors | Steel-works
Journal Article