HOLLOW CATHODE LAMP, ATOMIC ABSORPTION ANALYZER, AND ATOMIC FLUORESCENCE ANALYZER

摘要

A hollow cathode lamp (1), wherein a tubular member (8) is vertically installed on a stem (4) in a valve (2) to achieve an increase in productivity and a structure hard to produce the diffraction of discharge to an anode (7) from those other than a hollow cathode (10), whereby, the enclosure of the portion where the diffraction of discharge to the anode (7) is hard to occur can be achieved with such a simple structure that the tubular member (8) is installed vertically on the valve (2), the discharge in the tube axis (L) direction is assured in association with the adoption of the tubular member (8) extending in the tube axis (L) direction because the hollow electrode (10) is disposed concentrically to the tubular member (8), and the tubular member (8) having an effect for suppressing abnormal discharge can largely contribute to the workability in assembly and assist in the mass production of the lamp (1).