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Low-flux neutron imaging

Authors: Swinth, K. L.; Nichols, L. L.;

Low-flux neutron imaging

Abstract

Judicious use of scintillation screens greatly improves the capabilities for low-flux neutron imaging. Room temperature, cooled /sup 6/LiF-- ZnS(Ag) and gadolinium oxysulfide (Gd/sub 2/O/sub 2/S: Tb) were evaluated for direct exposures, and x-ray intensifying screens were evaluated with dysprosium and europium transfer screens. Although gadolinium oxysulfide provides improved resolution, it requires seven times the imaging time of /sup 6/LiF-- ZnS(Ag). Studies indicate that use of intensifying screens during transfer processes decreases the flux for a given density by about 30% and provides contrast enhancement. It was shown that cooling of scintillator-film combinations reduces reciprocity failure effects and in these experiments decreased direct exposure times (Gd/sub 2/O/sub 2/S: Tb) by up to 80%. (auth)

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United States
Related Organizations
Keywords

*Neutron Radiography-- Image Intensifiers, 570, N42400* --Engineering--Materials Testing, Oxysulfides, *Image Intensifiers-- Performance, Time Dependence Lithium Fluorides-- Silver-- Zinc Sulfides, Gadolinium- - Oxysulfides-- Terbium, Low Temperature

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average