low pressure electrical discharge

https://doi.org/10.1351/goldbook.L03636
Low pressure electrical discharge sources are radiation sources in which radiation is produced by electrical discharges in gases at low pressures, i.e. pressures from \(10^{2}\ \text{Pa}\) to \(10^{-3}\ \text{Pa}\).
Source:
Orange Book, 2nd ed., p. 145 [Terms]