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The Williams tube depends on an effect called secondary emission.
The storage is accomplished using the principle of secondary emission.
More modern tubes have anodes treated to minimise secondary emission.
Secondary emission occurs at the surface of each dynode.
They hit the electrode surface with sufficient energy to release a number of electrons through secondary emission.
This gun was set to a voltage that would cross the secondary emission threshold for the entire display.
The electrons from the secondary emission are re-collected by the anode.
Secondary emission is usually an unwanted phenomenon, and more modern valves are treated to minimize it.
As the beam scanned the line, the phosphor was pushed well beyond the secondary emission threshold.
When ions strike the target, 2-3 electrons per ion are produced by secondary emission.
Secondary emission had the useful feature that the rate of electron release was significantly non-linear.
Above another secondary effect also starts, secondary emission.
When any charged particle is accelerated, it emits electromagnetic radiation and secondary emissions.
Even if this secondary emission spectrumis consistent with that of an Andy ship, there must be other possibilities."
The report also mentions poorly designed and inefficiently used dust yards as a major source of secondary emissions into the atmosphere.
Another random access computer memory tube based on secondary emission was the Selectron tube.
To read the display, the beam scanned the tube again, this time set to a voltage very close to that of the secondary emission threshold.
When an electron hits the wall, the wall emits more electrons due to secondary emission.
Secondary emission can be undesirable such as in the tetrode thermionic valve (tube).
Late additions include particle-particle interaction, secondary emission of particles, and Brownian motion.
This design also minimized interference of secondary emission electrons dislodged from the anode.
In this case, the number of secondary electrons emitted per incident particle is called secondary emission yield.
The avalanche can be triggered by any charged particle hitting the starting electrode with sufficient energy to cause secondary emission.
Additionally, the secondary emission did not provide a sharp signal, and crosstalk between the pilot and writing beams was always a problem.
The second was that the phosphor, like many materials, also released new electrons when struck by an electron beam, a process known as secondary emission.