Patent ID: 8581494

Claim:
A glow discharge spectrometer discharge lamp ( 1 ) comprising: a lamp body having a vacuum enclosure ( 6 ) connected firstly to pump means ( 8 ) and secondly to injector means ( 10 ) for injecting an inert gas into said enclosure ( 6 ); a hollow cylindrical first electrode ( 2 ) of longitudinal axis X-X′; a second electrode ( 4 ) suitable for receiving a sample ( 12 ) for analysis and for holding the sample ( 12 ) facing one end of the cylindrical electrode ( 2 ); electric field generator means comprising an applicator ( 3 ) for applying to the terminals of said electrodes ( 2 and 4 ) an electric field that is continuous, pulsed, radiofrequency (RF), or hybrid, and that is suitable for generating a glow discharge plasma ( 11 ) in the presence of the gas ( 10 ); coupler means ( 16 ) for coupling the discharge lamp to a spectrometer that is suitable for measuring at least one component of said plasma ( 11 ); and magnetic field generator means for generating a magnetic field; the lamp being characterized in that: the magnetic field generator means are suitable for generating a magnetic field having field lines that are oriented along the axis X-X′, said magnetic field being uniform in orientation and in intensity over an area of the sample ( 12 ) that is not less than the inside area of the hollow cylindrical electrode ( 2 ) as projected along the direction X-X′.