Abstract
Characters of the noise associated with relative scattering measurement in nuclear emulsions are studied as functions of cell size and of track separation in depth of emulsion for three stacks having independent histories. It is found that the noise is divided into two characteristic types according to cell size. For short cell size, the noise is random Gaussian type and for long cell size more than about 3 mm, essentially, ordinary C or S shape. Although the track to track separation in depth is in usual limited severely in the relative scattering, it is shown that this limitation can be removed by cancelling the noise, in such a way that for short cell size is applied the subtraction method between the second and third order differences and for long cell size ordinary higher order difference method. This increases greatly the applicability of the relative scattering method.
