Statistisch Toetsen van Vliegtijdspectra in Neutronenverstrooiingsexperimenten: Beschrijving en Werking van het Programma RES86 (Statistical Testing of Flight Time Spectra in Neutron Scattering Experiments: Description and Operation of the Program RES86)

摘要

To check the consistancy of a measured time-of-flight spectrum in a neutron scattering experiment, each measurement is sub-divided in several runs. This makes it possible to determine the deviation (the residual) of a data point from its expectation value. The residuals of the Poisson distributed data points are transformed in such a way that they have a standard normal distribution. Examining the residual distribution, by means of some statistical tests, indicates outliers which can be replaced if desired. An existing program that operated on this principle failed to meet the demands. Therefore a new program was developed. Important issues were: the transformation of the residuals to the standard normal distribution, the ease-of-use of the program and the information presented to the user. Several tests made clear that the new program meets the given demands.