Autoradiographic Sensitometry

Presented at Symposium on “Radioisotopes in Photographic Research” organiLcd by the science Committee of the Royal Photographic Society on 8 May 1967 at the Atomic Energy Research Establishment, Harwell.

Abstract

There has been a recent trend in biological and medical research towards increasing use of long-lived isotopes of low activity, necessitating autoradiographic exposures of several months duration. In order to evaluate and improve handling techniques for the purpose of reducing fog levels, active silver step-wedges have been used, and the method of preparation of these by silver ion exchange between inert silver bromide and active silver nitrate is described. A series of experiments is described which traces the course of the exchange reaction, and establishes the degree of exchange at equilibrium.

Notes

Presented at Symposium on “Radioisotopes in Photographic Research” organiLcd by the science Committee of the Royal Photographic Society on 8 May 1967 at the Atomic Energy Research Establishment, Harwell.