Electrons & Gases: Changing Colour w/ Speed Increase

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SUMMARY

The discussion focuses on the phenomenon of fluorescence, where a gas emits light when excited by an electron beam. It clarifies that an electron beam itself does not possess color; rather, the interaction with the gas causes the observable glow. The conversation references the principles of cathode rays, emphasizing the relationship between electron speed and gas excitation. For further understanding, a link to a relevant Wikipedia article on cathode rays is provided.

PREREQUISITES
  • Understanding of fluorescence and its mechanisms
  • Familiarity with electron beams and their properties
  • Basic knowledge of gas behavior under excitation
  • Awareness of cathode ray principles
NEXT STEPS
  • Research the specific gases that exhibit strong fluorescence when excited by electron beams
  • Explore the principles of cathode ray tubes and their applications
  • Learn about the effects of electron speed on gas excitation and resulting color changes
  • Investigate the practical uses of fluorescence in scientific and industrial applications
USEFUL FOR

Students and professionals in physics, chemists studying gas behavior, and anyone interested in the applications of fluorescence in technology and research.

James12345678
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What type of gas would change the colour of an electron beam as the speed of the electrons increases?
 
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Hi there James
welcome to PF

an electron beam doesn't have a colour

but exciting a gas with a beam of electrons will cause the gas to glow
this is called fluorescence :smile:

have a look at this wiki link
http://en.wikipedia.org/wiki/Cathode_ray

cheers
Dave
 
Last edited:

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