Homework1.ppt - uc7acub8cc ud68cuc808...

This preview shows page 1 out of 1 page.

재료 회절 분석론 (20032학기) Homework 1 – Due on Oct.08 (Wed) -1.A light beam at = 500 nm is incident on a substance with an absorptioncoefficient = 0.2 cm–1at this wavelength. If the transmittance (Itran/Iincis 0.7 for a 1.0 mm-thick sample, what is the transmittance of a 3.0 mm-thick sample?2.In a tetragonal crystal with a = 5Å and c = 12Å, determine the angle between [111] and the normal to the plane (111).3.Prove that the reciprocal lattice of a BCC lattice is an FCC. If BCC latticehas the lattice constant “a”, what is the volume of the primitive reciprocal unit cell. (Hint: Start from the primitive unit cell of BCC).4.For a tetragonal crystal with 4/mmm point group, write down all planes which are crystallographically identical with (321). Which planes should be excluded from this form of planes {321} if the crystal becomes 4mm due to )

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture