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We report improvement of the Self-referenced lattice comparator using a wide brush beam with size of 16 mm × 0.3 mm and a pair of one-dimensional position sensitive X-ray counters instead of using a pencil beam with size of 1 mm × 0.3 mm and a pair of PIN photodiode detector in the former system. The experimental time is accelerated by a factor of more than ten times. Since we use a brush beam for the measurement, the wavelength alone the horizontal beam width positions are different, it is necessary to establish a data correction procedure for the lattice comparator. We reported our first data after the system improved, the spatial resolution of mapping measurement reached to 0.5 mm × 0.3 mm, that is higher than the previous system. [ABSTRACT FROM AUTHOR]

Various kinds of high-resolution monochromators which have the energy resolution (ΔE/E) of ∼ 10-7 in X-rays region, have been developed at Nuclear Resonant Scattering Beamline BL09XU, SPring-8. They were designed at the nuclear transition energies of 181Ta (6.2 keV), 57Fe (14.4 keV), 151Eu (21.5 keV), 149Sm (22.5 keV), 40K (29.8 keV) and 121Sb (37.1 keV). All of these developed monochromators worked well and have been utilized for user experiments of nuclear resonant scattering. © 2007 American Institute of Physics [ABSTRACT FROM AUTHOR]