Hollow Cathode Lamps
Found 3 free book(s)Atomic Absorption Determination of Zinc and Copper in a ...
terrificscience.orgHollow cathode lamps are used as the source on an atomic absorption spectrophotometer. The lamp has a cylindrical metal cathode sealed in a glass tube containing argon or neon. When a voltage is applied, the metal atoms of the cathode become electrically excited and then emit photons of light when they return to the ground state.
Basic Principles of Atomic Absorption and Atomic Emission ...
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Spectroscopy in the UV and Visible: Instrumentation
blamp.sites.truman.edu• Hollow Cathode Lamp – Cathode is coated with atom of interest – Tube is filled with Ar or Ne – High voltage ionizes gas, charged ions are accelerated toward electrodes • Produces sputtering of atoms (ground and excited) • Excited atoms emit light at atomic lines – Design of HCL results in redepostion of metal atoms onto