The Faraday cup can be completely separate from the gun, or it can be part of an assembly mounted to the end of the electron / ion gun and manipulated remotely.
22.
It is possible to set up an FEM with a probe hole in the phosphor screen and a Faraday cup collector behind it to collect the current emitted from a single plane.
23.
Therefore the ion current at the ion-decelerating voltage U _ g of the Faraday cup can be calculated by integrating Eq . ( 2 ) after substituting in it Eq . ( 3)
24.
An array of small Faraday cups or a Faraday cup on mounted on a linear manipulator can be used to measure the distribution of the beam current across the spot; this shows the beam uniformity.
25.
An array of small Faraday cups or a Faraday cup on mounted on a linear manipulator can be used to measure the distribution of the beam current across the spot; this shows the beam uniformity.
26.
Scanning coils are used to deflect the beam, such as by an electrostatic shift of the beam, where the beam is then collected using a current detector such as a Faraday cup, which acts as a direct electron counter.
27.
He led a team of MIT scientists who designed and built an instrument for the study of interplanetary plasma, called the modulated-grid Faraday cup after Michael Faraday, the 19th-century English scientist known for his work with electricity and magnetism.
28.
A single collector ICP-MS may use a multiplier in pulse counting mode to amplify very low signals, an attenuation grid or a multiplier in analogue mode to detect medium signals, and a Faraday cup / bucket to detect larger signals.
29.
The value of the electron-suppressor voltage ( accelerating the ions ) was set experimentally at U _ { es } =-170 V, near the point of suppression of the secondary electron emission from the inner surface of the Faraday cup.
30.
Essentially the Faraday cup is part of a electric current ( the number of electrons flowing through the circuit per second ) in the metal part of the circuit the number of charges being carried by the ions in the vacuum part of the circuit can be determined.
