Glow discharge lamp with getter material on anode

摘要

A glow discharge lamp that includes a light transmitting envelope containing a noble gas fill material and a pair of electrodes disposed in the envelope. Lead-in wires couple to the electrodes and extend to and are hermetically sealed in the envelope. The electrodes include an anode electrode and a cathode electrode. A getter material is disposed on the anode electrode. The getter material is maintained at an elevated temperature by virtue of a continuous lamp discharge to thus maintain chemical pumping in the envelope for the absorption of residual envelope gases.