Particle Physics: A Very Short Introduction (Very Short Introductions) by Close Frank

Author:Close, Frank [Close, Frank]
Language: eng
Format: mobi
Publisher: Oxford University Press
Published: 2004-05-12T16:00:00+00:00

The basic spark chamber consists of parallel sheets of metal separated by a few millimetres and immersed in an inert (less reactive) gas such as neon. When a charged particle passes through the chamber it leaves an ionized trail in the gas, just as in a cloud chamber. Once the particle has passed through, you apply a high voltage to alternate plates in the spark chamber. Under the stress of the electric field, sparks form along the ionized trails. The process is like lightning in an electric storm. The trails of sparks can be photographed, or their positions can even be recorded by timing the arrival of the accompanying crackles at electronic microphones. Either way, a picture of particle tracks can be built up for subsequent computer analysis.

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