H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0048—Tubes with a main cathode
H01J2893/0051—Anode assemblies; screens for influencing the discharge
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Physical Or Chemical Processes And Apparatus
(AREA)