Page 6 - HCL Brochure EN

Multi-Element Lamps and See-Through Hollow Cathode Lamps
Multi-Element Lamps
Heraeus manufactures the largest range of multi-element lamps offering only those combinations which provide sufficient intensity and an acceptable lifetime for each element with no spectral interference.
Multi-element hollow cathode lamps are available with two to seven different element combinations. These are particularly useful for carrying out routine analysis on a number of different elements in the same sample, such as alloys. Multi element lamps are inevitably a compromise in which energy levels will be lower than single element lamps and hence noise levels may be higher. This may limit ultimate detection levels, single element lamps being preferred wherever sensitivity is an issue.
See-Through Hollow Cathode Lamps
Heraeus also manufactures optogalvanic (see-through) hollow cathode lamps, designed to act as a frequency stable reference for high intensity tuneable monochroma- tic light sources, particularly lasers. Most of the cathode materials used in standard Heraeus hollow cathode lamps may be used in the “see-through” design.
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See-Through Hollow Cathode Lamp