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

摘要

A hollow cathode lamp (1), wherein a tubular member (8) and an anode tube (7) are vertically installed on and through a stem (4), respectively, in a valve (2) and the anode tube (7) is surrounded by the tubular member (8) to achieve a structure hard to produce the diffraction of discharge to the anode tube (7) from those other than a hollow cathode (10), whereby, the anode tube (7) itself can be used as a lead because the anode tube (7) itself is passed through the stem (4), a light output can be increased with a simple structure because the surface area is increased by forming the anode itself into a tubular shape and, accordingly, a heat radiation effect can be increased to increase an input current value, and the tubular member (8) and the anode tube (7) can be disposed concentrically to each other because the anode tube (7) is extended in a tube axis (L) direction to allow the assembly of the lamp (1) by using the anode tube (7) as the reference.