In this paper the excitation temperature in a Gd hollow cathode lamp is measured for the first time. This measurement has made with considering of lamp spectra. One of the important measurements in plasma before using it as an interaction region with laser, is measuring of excitation temperature. Hollow cathode lamps are one of these regions. In this paper a Gd hollow cathode lamps with Ne as buffer gas is used as a plasma region. And the excitation temperature is measured. When the lamp current was 10 mA, the excitation temperature is measured 3000K.
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