The Study of thermal diffuse scattering measured by pulsed neutron diffraction

Shibata, Kaoru  ; Takahashi, Nobuaki; Tsukushi, Itaru*; Nakajima, Kenji  ; Arai, Masatoshi

In this presentation, we will report the experimental results of thermal diffuse scattering (TDS) which occurs close to the Bragg reflections in time-of-flight neutron diffraction. We measured the thermal diffuse scatterings around some analyzer crystals Bragg peaks; pyrolitic graphite PG(002), perfect silicon Si(111) and natural green mica: Mica(006). Those experiments were performed on the diffraction counter bank of LAM-80ET: the indirect geometry crystal analyzer spectrometer installed at KENS; the pulsed neutron source in KEK, Japan, using scattering angles around 2th 160. deg.