phosphor


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phos·phor

(fos'fŏr),
1. A chemical substance that transforms incident electromagnetic or radiation energy into light, as in scintillation radioactivity determinations or radiographic intensifying screens or image amplifiers.
2. Any substance capable of exhibiting phosphorescence.
[G. phōs, light, + phoros, bearing]

phos·phor

(fos'fŏr)
A chemical substance that transforms incident electromagnetic or radioactive energy into light, as in scintillation radioactivity determinations or radiographic intensifying screens or image amplifiers.
[G. phōs, light, + phoros, bearing]

phosphor

(fos′fŏr, ′for″) [Fr. phosphore, fr L. phosphorus, morning star, fr Gr. phōsphoros, light-bringer]
A substance that in radiographic intensifying screens, fluoroscopic image intensifiers, or other image receptors converts photons of ionizing radiation into light, thereby amplifying the image.

rare-earth phosphor

An element such as yttrium, gadolinium, or lanthanum, used for ultra-high-speed radiographic intensification screens.
References in periodicals archive ?
Comparison of the Blue LED Excited Radiation Power Spectrum and CIE Index for Phosphor R-626 of Different Weight Concentrations.
In this paper, we present the optimized thickness of phosphor layer for EL device by screen printing coated on plastic electrode transparent (PET).
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After the prototype proved to be a lot of fun, Phosphor Games began developing "The Brookhaven Experiment" in the fall.
The phosphors in today's fluorescent lighting consume more than 1,000 metric tons of rare earth oxides yearly, most of which is imported.
David Peat, Product Specialist at Intertronics, worked with Plessey to recommend mixing and dispensing equipment for the LED phosphors. The Thinky ARV-310 LED benchtop mixer is a non-contact planetary mixer which mixes, dispenses and degasses according to programmable mixing profiles.
Pending written consent from parents, neonates received 75 and 230 mg/kg doses of calcium and 50, 110 mg/kg/day phosphor during day 10-15 after birth or whenever they could tolerate 10cc breastfeeding.
In addition to mixing strategy, phosphor solutions for general lighting require a high degree of ruggedness.
"Phosphor is a watch brand for the 'Fashionably Techie'," says Melissa Racela, president of Phosphor Philippines.
In this study, the investigated specimens were made by using Sr[Al.sub.2][O.sub.4]:[Eu.sup.2+], [Dy.sup.3+] phosphor powder mixed with 60% PET resin in weight, which was printed on top of the PET plastic white substrate to form a plastic patch with thicknesses between 0.4 mm and 0.6 mm.
There are three ways to produce white LEDs: (i) combining a blue LED with a yellow phosphor, for example, [Y.sub.3][Al.sub.5][O.sub.12]:[Ce.sup.3+], (ii) mixing red, green, and blue emissions from three LEDs, and (iii) exciting red/green/blue tricolor phosphors with a near-UV LED (370-410 nm).