Generalised gamma spectrometry simulator for problems in nuclide identification

ETNA (Efficiency Transfer for Nuclide Activity measurements) Software for efficiency transfer and coincidence summing corrections in gamma-ray spectrometry

Producing 65Zn and 60Co gamma sources for energy and efficiency calibration of gamma spectrometry systems

Precise calibration of energy and efficiency of gamma spectrometry systems for different geometries is very important. In most cases, preparation of these sources for educational and research centers  is very difficult due to high costs and lack of access to the reactor. The purpose of this paper is to explain the procedure for production of calibration sources 65Zn and 60Co using instrumental ...

Principal eigenvalues for generalised indefinite Robin problems

We consider the principal eigenvalue of generalised Robin boundary value problems on non-smooth domains, where the zero order coefficient of the boundary operator is negative or changes sign. We provide conditions so that the related eigenvalue problem has a principal eigenvalue. We work with the framework involving measure data on the boundary due to [Arendt & Warma, Potential Anal. 19, 2003, ...

On Maximisation of the Likelihood for the Generalised Gamma Distribution

We explore computational aspects of likelihood maximisation for the generalised gamma distribution. We improve on earlier work by being the first to formulate the iterative approach to solution of the likelihood score equations in such a way that the individual equations involved are uniquely solvable. We observe that the resulting algorithm is well-behaved and competitive with the application ...

Multichannel processing for airborne gamma-ray spectrometry

The conventional approach to the processing of airborne gamma-ray spectrometric data is to first sum the observed spectra over three relatively broad energy windows. These three window count rates are then processed to obtain estimates of the potassium (K), uranium (U), and thorium (Th) elemental abundances. However, multichannel spectra contain additional information on the concentrations of K...