Energy Spectra of Delayed Neutrons from the Separated Precursors Rubidium-93, -94, -95, and Cesium-143

Energy spectra of delayed neutrons from the precursors ^93,94,95Rb and ¹⁴³Cs have been measured by use of an on-line mass spectrometer and a ³He neutron spectrometer. Details of the experimental techniques, data analysis, and error estimates are given. A comparison of delayed-neutron spectra for ⁸⁷Br, ^93,94,95Rb, and ¹⁴³Cs measured by three different laboratories is presented. Peak structures are reproduced by all laboratories, but the relative intensities below 200 keV vary according to different measurement or data analysis techniques.