| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
|
|---|
| Outline of Final Research Achievements |
Desorption induced by electronic transitions (DIET) resulting from the irradiation of electrons changes the morphology of the surface. As the result of the DIET, the surface of alkali halide crystals is covered by rectangular pits of monolayer depth with edges oriented along the crystallographic directions. In order to investigate the change of the surface morphology by the electron irradiation, the specular intensity of scattering yields of fast protons scattered on a surface under the surface-channeling conditions was measured. Because desorption proceeded in a layer-by-layer mode, desorption rates of surface atoms were the reciprocals of electron fluences corresponding to the desorption of all atoms arranged on the surface monolayer. Fluences were obtained from oscillation periods of the specular intensity of scattering yields. The surface morphologies were partly evaluated with comparisons of computer simulation and experimental results.
|
