Polarization analysis instruments for separation of incoherent scattering at BL15 TAIKAN and SANS-J

廣井 孝介  ; 熊田 高之   ; 中部 倫太郎; 元川 竜平   ; 奥 隆之   

Hiroi, Kosuke; Kumada, Takayuki; Nakabe, Rintaro; Motokawa, Ryuhei; Oku, Takayuki

In small-angle neutron scattering (SANS) measurement, incoherent scattering components from samples are observed as background that does not have structural information. The incoherent scattering component can be experimentally estimated and separated from the coherent scattering one by separately observing spin-flip and non-spin-flip scattering components using polarization analysis. There are some SANS instruments that have such polarization analysis option in Japan, BL15 TAIKAN at Material and Life science Experimental Facility (MLF) of J-PARC and SANS-J of JRR-3. In this presentation, we will introduce polarization analysis setups of TAIKAN and SANS-J and show recent experimental results.