The intensity of light scattered by particles on film-coated wafers was measured as a function of film thickness using two types of particle counter with different optical configurations. The scattered light intensity was found to oscillate periodically with film thickness; the period of oscillation was in agreement with that of the reflectivity of the incident beam, and significant enhancement of scattering intensity was observed for thicknesses less than about 0.3 μm.
|Journal||Japanese Journal of Applied Physics, Part 2: Letters|
|Issue number||5 B|
|Publication status||Published - 1996|
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)