“…The choice of glass is based on its isolator character being the only dielectric in the discharge, its hardness as well as its inert aspect. During the experiments, two lamps were used α and β. the α lamp was discussed in [2], the dimensions of β source are: 200 mm long, external diameter was 20 mm, glass thickness was 2 mm. The glass tube was fitted on a stainless steel flange fitting.…”