Status of inelastic and quasielastic neutron scattering study on micro eV TOF type Si crystal analyzer backscattering spectrometer DNA at J-PARC

Shibata, Kaoru  ; Kawakita, Yukinobu  ; Nakagawa, Hiroshi   ; Yamada, Takeshi*; Tominaga, Taiki*; Matsuura, Masato*

A time-of-flight (TOF) type near-backscattering spectrometer (n-BSS), DNA was built and started operation in 2012 at the Materials and Life Science Experimental Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC). It offers a high-energy resolution of about 1.6 micro eV and very wide energy scan range: -400 E/[micro eV] +600 with signal-to-noise ration of 100,000. Those factors gave big advantage to enlarge application fields to dynamical behaviors of atoms and spins in bio-molecules, soft-materials and strongly-correlated electron system in nanosecond timescale or in micro-eV energy region.