Device for spectroscopic measurements of gas composition after addition of helium

摘要

A device for spectroscopic measurement of a gas composition wherein a helium resonance lamp includes a window partially transparent to radiation at 584A which is emitted by said lamp, the window being within a chamber. The gas to be sampled is mixed with He and placed in the chamber and the lamp is excited. Spectral radiation from the chamber is viewed and analyzed through an observation window.