“…34 Measured V/l curve for sodium/rare-gas discharge showing its multivalued character [50] -t(ms) Fig. 35 Measured electric field E, electron temperature T e and axial electron density N e in sodium-neon discharge [53] 900 mA, 50 Hz, tube diameter 19 mm, neon pressure 730 Pa, tube-wall temperature 530 K and electron density have also been carried out on a discharge operating on a 50Hz supply [52,53]. Fig.…”