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Summary form only given. The lifetime of fluorescent lamps is mainly limited by the loss of emitter material which is released from the thermionic cathode due to sputtering and evaporation. To predict the lifetime of these lamps it is desirable to understand and quantify the transport of barium in the cathode region. For this purpose, the transport of barium atoms and ions in ground and excited states...
Summary form only given. The lifetime of fluorescent lamps is typically restricted by the lifetime of their electrodes. During normal operation, the work function lowering emitter material (primarily Ba) is released from the cathode due to evaporation and sputtering. For lifetime prognosis the understanding and quantification of the barium transport in the electrode region is essential. Therefore,...
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