Nuclear Inelastic Scattering
Setup for the NIS measurement. The pulsed beam is monochromatized to a meV energy band with the high resolution monochromator (HRM) before it penetrates the ionization chamber (IC) and the sample. The radiative decay of the resonant nuclei in the sample is measured with two APD detectors: one in forward direction (NFS), which collects data only from a small solid angle (top) and one at 90o (NIS) which collects data in a large solid angle (bottom). Details are described in the text below.
Nuclear inelastic scattering (NIS) permits to observe
by detuning the high resolution monochromator (HRM)
the time integrated signal of
The measured spectrum is corrected by the flux of the monochromatized radiation incident on the sample as monitored by the ionization chamber (IC).
Based on the PhD thesis of Hanne Grünsteudel, Lübeck 1998