Atomic spectra of two-electron system: He, Hg

Article no. P2510810 | Type: Experiments

45 Minutes
45 Minutes
University
Students
heavy

Principle

The spectral lines of He and Hg are examined by means of a diffraction grating. The wavelengths of the lines are determined from the geometrical arrangement and the diffraction grating constants.

Benefits

  • Spectral lines of various elements can be determined with high precision
  • Simple setup for high ranking experiments
  • HV power supply with high safety standards makes experimentation safe

Tasks

  1. Determination of the wavelengths of the most intense spectral lines of He.
  2. Determination of the wavelengths of the most intense spectral lines of Hg.

Learning objectives

  • Parahelium
  • Orthohelium
  • Exchange energy
  • Spin
  • Angular momentum
  • Spinorbit interaction
  • Singlet and triplet series
  • Multiplicity
  • Rydberg series
  • Selection rules
  • Forbidden transition
  • Metastable state
  • Energy level
  • Excitation energy

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(en) Experiment guide
p2510810_en .pdf
File size 1.30 Mb
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