Why Does Photomultiplier Tube Emit 2 Electrons?

Level: Undergrad
Thread starter SciencePF
Start date Apr 27, 2010
Tags

Tube

Join the discussion

Registration is free. Start your own thread to ask a follow-up.

2 replies · 3K views

SciencePF

Thread starter
Apr 27, 2010

Why first photon emits two electrons in a photomultiplier tube? The interaction is one photon with one electron, am i right?
Thanks in advance.

Physics news on Phys.org

Ultrathin materials could make quantum light circuits programmable
Spin rephasing helps quantum memories store single-photon states longer for future networks
Discovery confirms rare, switchable electrical property in widely used electronics material

Discussion

Doc Al

Mentor

Apr 27, 2010

The photoelectric effect is just the first step. That first emitted electron is then slammed into plates which causes several additional electrons to be emitted. (The latter effect is called secondary emission.)

SciencePF

Apr 27, 2010

Thx Doc Al :)

sidebar

Why Does Photomultiplier Tube Emit 2 Electrons?

Discussion

Similar threads

Graduate Why does a photomultiplier tube produce a negative output pulse?

Undergrad How is photomultiplier tube sensitivity measured?

Graduate Can a Photomultiplier Detect Single Photons for a DIY Double Slit Experiment?

Graduate Could a photon activate multiple photomultipliers at once?

Photomultiplier Tube Destroying Amplifiers - Suggestions?

Undergrad How does the 3rd electron know the spins of the first 2 electrons?

How Many Electrons Does a Cathode Ray Tube Emit Per Second?

Photomultiplier Tube - Gain and Secondary Emission

Calculating Photomultiplier Tube Saturation Limit

Can a Photomultiplier be Calibrated for Extremely Low Light Levels?