We report the efficacy and spectrum of an inductively-coupled, radio-frequency discharge in mixtures of magnesium (Mg), hydrogen (H2), and argon vapor. The predominantly green emission is dominated by the A-X band of MgH, plus some Mg lines. The discharge operates in a frit-sealed, ~600 C alumina cell with a sapphire window, at pressures of 200-600 Pa. The plasma impedance is established from the impedance of the matching network parameters, and the electron temperature is determined from line intensity ratios. Assuming isotropic emission, a maximum energy efficiency (Η of ~ 90 Im per watt) is achieved, where Η is the ratio of visible emission to power delivered to the matching network.
Journal of Applied Physics
lighting, magnesium hydride
and Gallagher, A.
Charge Lamp BAsed on MgH RAdiation, Journal of Applied Physics
(Accessed June 5, 2023)