Akira Tsuchiyama

Compositional dependence of infrared absorption spectra of crystalline silicate: II. Natural and synthetic olivines

The mass absorption spectra of crystalline olivine particles with different

Quantitative evaluation of attenuation contrast of X-ray computed tomography images using monochromatized beams

{rm Mg/(Mg + Fe)}

Temperature effects on the mid-and far-infrared spectra of olivine particles

ratios, between forsterite (

Infrared reflection spectra of forsterite crystal

{rm Mg_{2}SiO_{4}}

Nondestructive three-dimensional element-concentration mapping of a Cs-doped partially molten granite by X-ray computed tomography using synchrotron radiation

, Fo) and fayalite (

Experimental reproduction of classic barred olivine chondrules: open-system behavior of chondrule formation

{rm Fe_{2}SiO_{4}}

Evaporation of interstellar organic materials in the solar nebula

, Fa), were measured for synthetic and natural samples in the mid- and far-infrared regions. The main strong peaks show a systematic shift to longer wavelengths as the

Three-dimensional diffusion of non-sorbing species in porous sandstone: computer simulation based on X-ray microtomography using synchrotron radiation

{rm Mg/(Mg + Fe)}

Micro-tomographic imaging for material sciences at BL47XU in SPring-8

ratio decreases. In the 10–17xa0 μ m region, these trends are very clear, and the peak positions are a good indicator of the composition of dust grains. In the 20–100xa0 μ m region, the trends are also rather clear, though they are slightly complicated; the intensity and width of the various bands become weak and broad, respectively, or the bands disappear as the concentration of Fo decreases. However, the trends are clear only in a limited composition range near Fo and Fa; the peak positions of 30, 50, and 69xa0 μ m bands of forsterite shift linearly as the Fo concentration decreases to about

Three-Dimensional Structures of Interplanetary Dust Particles and IDP-like Large Micrometeorites Using Synchrotron Radiation Microtomography

{rm Fo_{70}}