Calculating Energy Difference for K Characteristic X-Ray Line of Tungsten

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SUMMARY

The discussion focuses on calculating the energy difference for the K characteristic X-ray line of tungsten, specifically with a wavelength of 1.94 x 10-11 m. The energy difference can be derived using the equation E = hc/λ, where E is energy, h is Planck's constant, and c is the speed of light. The results should be expressed in joules and electron volts (eV), providing a clear understanding of the energy levels involved without needing to know their specific values.

PREREQUISITES
  • Understanding of Planck's constant (h = 6.626 x 10-34 J·s)
  • Knowledge of the speed of light (c = 3.00 x 108 m/s)
  • Familiarity with the relationship between energy, wavelength, and frequency
  • Basic skills in unit conversion between joules and electron volts
NEXT STEPS
  • Learn the derivation of the equation E = hc/λ
  • Research the conversion factors between joules and electron volts
  • Explore the significance of characteristic X-ray lines in spectroscopy
  • Study the applications of X-ray energy calculations in material science
USEFUL FOR

Students in physics or chemistry, researchers in material science, and professionals working with X-ray spectroscopy will benefit from this discussion.

MrDMD83
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Homework Statement



The K characteristic X-ray line for tungsten has a wavelength of 1.94 10-11 m. What is the difference in energy between the two energy levels that give rise to this line? Express this in each of the following units.
(a) joules
J
(b) electron volts
eV


Homework Equations



?

The Attempt at a Solution



How do I find the two energy levels?
 
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You don't need to know the energy levels, you just need to know their difference in energy. You know the x-ray wavelength, and there is an equation that gives you the energy of the x-ray corresponding to this wavelength - what is that equation?
 

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