シンクロトロン放射による光物性の研究
1969 年 38 巻 3 号 p. 196-211
詳細
1969 年 38 巻 3 号 p. 196-211
Recent development in the study of optical properties of solids in XUV, i. e. the region between 10 and 103 eV by means of synchrotron radiation is reviewed. Absorption spectra for Cl-L2, 3 of alkali chlorides, AgCl, and TlCl, S-L2, 3 of CdS, Na+L2, 3 of sodium halides, Li+K of lithium halides observed either by INS-SOR, Tokyo, or DESY, Hamburg are presented, in which the emphasis is placed upon the exciton problems. After giving a brief summary of observations on the plasma resonance in Al, some characteristic behaviors of metals in XUV are discussed in terms of realistic, or non-hydrogenic potentials for electrons at the intermediate shells in the atom. Problems encountered in determining the optical constants in XUV are also discussed and a few techniques which seem feasible in this region, namely, the self-consistent Kramers-Kronig analysis of μ and R through the entire region of the spectrum and the analysis of reflectances measured at totally reflecting angles, are mentioned.
