FINE GRAIN NUCLEAR EMULSION

Patent · Tue Apr 24 00:00:00 EST 1962

OSTI ID:4785924

Oliver, A J

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)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-013838
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 3031304
• OSTI ID: 4785924
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: United States
• Language: English

Related Subjects

PHYSICS
GRAIN SIZE
IONS
NUCLEAR EMULSIONS
POTASSIUM BROMIDES
PRODUCTION
QUANTITY RATIO
SILVER
SILVER NITRATES
THICKNESS