Silver-activated Nitrocellulose as Recording Material for X-Ray Microscopy

Abstract

ELECTRON optical enlargement of X-ray absorption micrographs has been discussed by Pattee¹ and Asunmaa². A contact micrograph is recorded on a thin layer of material sensitive to X-rays in which the absorbed radiation promotes physical or chemical changes that modify the areal electron density. For example, there may be a decomposition resulting in soluble products which are afterwards removed³. A relief image with details of submicroscopic scale then shows an electron optical contrast. For electron optical enlargement of an X-ray absorption micrograph (instead of a replica of it) certain conditions are necessary, particularly if the electron micrograph is to reproduce the quantitative properties of the X-ray absorption images².