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Title: FINE GRAIN NUCLEAR EMULSION

A method of preparing nuclear track emulsions having mean grain sizes less than 0.1 microns is described. The method comprises adding silver nitrate to potassium bromide at a rate at which there is always a constant, critical excess of silver ions. For minimum size grains, the silver ion concentration is maintained at the critical level of about pAg 2.0 to 5.0 during prectpitation, pAg being defined as the negative logarithm of the silver ion concentration. It is preferred to eliminate the excess silver at the conclusion of the precipitation steps. The emulsion is processed by methods in all other respects generally similar to the methods of the prior art. (AEC)
Authors:
Publication Date:
OSTI Identifier:
4785924
Report Number(s):
US 3031304
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Research Org:
Originating Research Org. not identified
Country of Publication:
United States
Language:
English
Subject:
PHYSICS; GRAIN SIZE; IONS; NUCLEAR EMULSIONS; POTASSIUM BROMIDES; PRODUCTION; QUANTITY RATIO; SILVER; SILVER NITRATES; THICKNESS