An application of the zeeman effect to analytical atomic spectroscopy—IThe construction of magnetically-stable spectral sources

A design is given for a d.c. discharge lamp which will maintain a stable plasma in a magnetic field. The lamp is of particular use for applications of the Zeeman effect to analytical atomic spectroscopy. Three designs of cathode are described, which cover three different temperature ranges for the m.p. of the elements concerned. The experimental behaviour of lamps at varying magnetic field strengths, filler pressures and operating currents is considered.