8 results about "Hollow-cathode lamp" patented technology

A hollow-cathode lamp (HCL) is type of cold cathode lamp used in physics and chemistry as a spectral line source (e.g. for atomic absorption spectrometers) and as a frequency tuner for light sources such as lasers. An HCL takes advantage of the hollow cathode effect, which causes conduction at a lower voltage and with more current than a cold cathode lamp that does not have a hollow cathode. An HCL usually consists of a glass tube containing a cathode, an anode, and a buffer gas (usually a noble gas).