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photocathode::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Type of | cathode |
Examples of photocathode
photocathode
This tube consisted of a photocathode in close proximity to a fluorescent screen.
From the en.wikipedia.org
A photocathode usually consists of alkali metals with very low work functions.
From the en.wikipedia.org
With special manufacturing techniques this photocathode can operate up to 1700 nm.
From the en.wikipedia.org
This makes the photocathode very efficient at creating photoelectrons from photons.
From the en.wikipedia.org
Highly active oxide photocathode for photoelectrochemical water reduction.
From the sciencedaily.com
Photocurrent output and wavelength response at the plasmonic photocathode.
From the nature.com
This was the first compound photocathode material, developed in 1929.
From the en.wikipedia.org
It defines how many electrons are produced per quantity of light that falls on the photocathode.
From the en.wikipedia.org
The multialkali photocathode has a wide spectral response from the ultraviolet to near infrared region.
From the en.wikipedia.org
- A cathode that emits electrons when illuminated
- A photocathode is a negatively charged electrode in a light detection device such as a photomultiplier or phototube that is coated with a photosensitive compound. When this is struck by light, the absorbed energy causes electron emission due to the photoelectric effect.
- Converts light (photon energy) into electrons (electrical energy) which are then amplified in the intensifier. The objective lens focuses available light on the photo-electric surface of the photocathode which is excited and passes electrons within the tube.
- A thin film on the input of an image intensifier or SIT and ISIT image pickup tube which transforms the optical image into an exact electron replica. Usually linear with changing input light level.
