| Zugriffsnummer | 28141 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Resolving power and superresolution for spectrometers used in radiation detection |
| Autor(in); Institution |
Reginatto, Marcel; 6.5, Neutronenstrahlung, PTB-Braunschweig
|
| Quelle/Jahr | Advanced mathematical and computational tools in metrology and testing IX : AMCTM IX:(2012), 342 - 349 |
| Schriftenreihe | Series on advances in mathematics for applied sciences: 84 |
| Herausgeber(in) |
Pavese, Franco
|
| ISBN | 978-981-4397-94-0 |
| Verlag | Singapore [u.a.]: World Scientific Publ. |
| Konferenzangaben | AMCTM 11, International Conference on Advanced Mathematical and Computational Tools in Metrology and Testing IX, Göteborg, 20-22, June, 2011, Sweden |
| Freie Schlagworte | Resolving power ; Superresolution ; Radiation detection |
| Zusammenfassung | Resolution is one of the most important concepts used to describe the performance of a measuring apparatus. It was originally developed in optics, where it is used to quantify the ability of an instrument (e.g., a telescope) to distinguish between two point sources (e.g., two stars) separated by a small angular interval. One of the most widely used measures of resolution is the Rayleigh criterion, which defines resolution in terms of the effective width of the point spread function (or response function) of the instrument. For spectrometers used in radiation detection, it is in general not possible to introduce a simple definition of energy resolution that is analogous to the Rayleigh criterion used in optics. This is because the spectrometers’ response functions are in many cases irregular in shape, show substantial overlap, and are not localized around a given energy. Furthermore, many of the spectrometers used for radiation detection provide an indirect measurement of the energy spectrum, and the deconvolution methods that are needed to analyze the data can not be neglected when quantifying resolution. This paper presents a general procedure which is applicable to such detectors. The approach, which is based on the formalisms of Backus and Gilbert and of Kozarev, leads to estimates of the resolving power and of the superresolution factor of a spectrometer. These theoretical estimates are compared to measurements made with a neutron spectrometer. |
