Hydrogen line broadening in afterglow observed by means of EPR

• Authors: DOLEŽAL Vojtěch; MRÁZKOVÁ Martina; DVOŘÁK Pavel; KUDRLE Vít; TÁLSKÝ Antonín
• Year of publication: 2005
• Type: Article in Proceedings
• Conference: 15th Symposium of Applications of Plasma Processes - Book of Contributed Papers
• MU Faculty or unit: Faculty of Science
• Field: Plasma physics
• Keywords: hydrogen; afterglow; EPR
• Description: We study hydrogen line broadening in the EPR spectrum in the afterglow of microwave discharge in hydrogen with small amount of oxygen admixture.A strong increase of the hydrogen EPR line width and concentration of H atom with increasing amount of oxygen in the discharge was observed. The possible explanation of both phenomena is the transfer of energy from metastables to dissociation of hydrogen molecules, which results in suprathermal H atoms.

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