What is virtual energy level ?

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SUMMARY

The term "virtual energy level" refers to a concept in Rayleigh scattering where photon absorption leads to excitation to a non-existent energy level, followed by the immediate re-emission of a photon. This process is distinct from fluorescence, which involves transitions between real energy states. Understanding virtual energy levels is crucial for comprehending scattering phenomena in physics, particularly in the context of light interactions with matter.

PREREQUISITES
  • Basic understanding of quantum mechanics
  • Familiarity with photon behavior and light-matter interactions
  • Knowledge of Rayleigh scattering principles
  • Concept of energy levels in atomic physics
NEXT STEPS
  • Research the principles of Rayleigh scattering in detail
  • Explore the differences between Rayleigh scattering and Raman scattering
  • Study the concept of fluorescence and its applications
  • Investigate the role of virtual energy levels in quantum mechanics
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Students and professionals in physics, particularly those focusing on optics, quantum mechanics, and light-matter interactions will benefit from this discussion.

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What is "virtual energy level"?

What is "virtual energy level"?
 
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In the context of http://en.wikipedia.org/wiki/Rayleigh_scattering" scattering, the effect can be viewed as photon absorption giving excitation to a non-existent ('virtual') energy level, followed by immediate re-emission of a photon and return to the same (Rayleigh) or another (Raman) state.

Contrast this to http://en.wikipedia.org/wiki/Fluorescence" , which occurs between real energy states.
 
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