Luminescence of oxygen atoms stimulated by metastable helium at cryogenic temperatures. Academic Article uri icon


  • We present investigations of the afterglow of oxygen-helium gas mixtures at cryogenic temperatures. The cooling of a helium jet containing trace amounts of oxygen after passing through a radio frequency discharge zone led to the observation of strong emissions from atomic oxygen. The effect results from the increasing efficiency of energy transfer from metastable helium atoms and molecules to oxygen impurities in the cold dense helium vapor. This effect might find an application for the detection of small quantities of the impurities in helium gas.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Khmelenko, V. V., Mao, S., Meraki, A., Wilde, S. C., McColgan, P., Pelmenev, A. A., Boltnev, R. E., & Lee, D. M.

citation count

  • 9

complete list of authors

  • Khmelenko, VV||Mao, S||Meraki, A||Wilde, SC||McColgan, P||Pelmenev, AA||Boltnev, RE||Lee, DM

publication date

  • November 2013