Emission spectral line intensity

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SUMMARY

The discussion focuses on calculating the intensity of spectral lines using data from the NIST website, including parameters such as wavelength, Einstein coefficient (Aki), and energy levels (Ei and Ek). The intensity is defined as the number of photons emitted per time during atomic transitions. Key factors influencing intensity include the number of atoms, their excitation states, and the population of energy levels, with a distinction made between relative and absolute intensity measurements.

PREREQUISITES
  • Understanding of spectral line intensity and atomic transitions
  • Familiarity with NIST data for spectral lines
  • Knowledge of Einstein coefficients (Aki) and their significance
  • Basic concepts of energy levels in quantum mechanics
NEXT STEPS
  • Research methods for calculating absolute intensity in atomic transitions
  • Explore the significance of Einstein coefficients in spectroscopy
  • Learn about population distribution of energy levels in thermal equilibrium
  • Investigate the differences between relative and absolute intensity measurements
USEFUL FOR

Physicists, spectroscopists, and researchers in atomic and molecular physics who are involved in calculating and analyzing spectral line intensities.

bejoynp
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Dear all

I need to calculate the intensity of the spectral line. I have data from NIST website:
wavelength, Aki (Einstein coefficient), gi, gk, Ei and Ek energy levels.

How do i go about

Thanks for your help
 
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Are you talking about the energy of the photon released from the atomic transition .
 
The intensity of the radiation emitted when an electron transitions from a higher energy state to lower
 
(Absolute) Intensity normally refers to photons per time.
So: how many atoms are there? How are they excited? Do you know the (average) population of the levels? Do you mean relative or absolute intensitiy?
 

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