DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: FINE GRAIN NUCLEAR EMULSION

Abstract

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)

Inventors:
Issue Date:
OSTI Identifier:
4785924
Patent Number(s):
3031304
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
G - PHYSICS G03 - PHOTOGRAPHY G03C - PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES
NSA Number:
NSA-16-013838
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
United States
Language:
English
Subject:
PHYSICS; GRAIN SIZE; IONS; NUCLEAR EMULSIONS; POTASSIUM BROMIDES; PRODUCTION; QUANTITY RATIO; SILVER; SILVER NITRATES; THICKNESS

Citation Formats

Oliver, A J. FINE GRAIN NUCLEAR EMULSION. United States: N. p., 1962. Web.
Oliver, A J. FINE GRAIN NUCLEAR EMULSION. United States.
Oliver, A J. Tue . "FINE GRAIN NUCLEAR EMULSION". United States.
@article{osti_4785924,
title = {FINE GRAIN NUCLEAR EMULSION},
author = {Oliver, A J},
abstractNote = {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)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1962},
month = {4}
}