Spectroscopic measurements of the excitation temperature and electron ensity of a Helium discharge lamp

Authors

  • Krizia Isabel Lampa ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Joshua Beringuela ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Wilson Garcia ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Optical emission spectroscopy was used to investigate the processes occurring in the plasma of a helium discharge lamp at two regions: capillary and electrode. The capillary region having a smaller cross-sectional area gives rise to higher intensities making it easy for spectroscopic measurements in laboratories. With elemental discharge lamps producing low-pressure plasmas, the Boltzmann plot method only gives the excitation temperature (Texc) of the plasma. Texc was found to be 3200K at the capillary region while the region near the electrode ranges from 1400K-1700K. The electron density at the capillary region was found to be 2.70x1014 cm-3.

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Published

2018-11-09

How to Cite

[1]
KI Lampa, J Beringuela, and W Garcia, Spectroscopic measurements of the excitation temperature and electron ensity of a Helium discharge lamp, Proceedings of the Samahang Pisika ng Pilipinas 30, SPP2012-1C-4 (2018). URL: https://proceedings.spp-online.org/article/view/SPP2012-1C-4.