Title :
Electrode erosion in pulse operated high-pressure-sodium lamps
Author :
Kaiser, Walter ; Correa, Alexander Fernandez ; Marques, Ricardo Paulino
Author_Institution :
Escola Politecnica da Universidade de Sao Paulo, Brazil
Abstract :
This paper investigates the electrode behavior of HPS lamps under pulse operation during vapor arc mode and thermionic state. Records of barium Ba II line (λ= 455.4 nm) intensity emissions near one electrode surface were taken during the first 20s after lamp starting with different pulse parameters. The results are compared with measurements obtained with the lamp operating at line frequency.
Keywords :
barium; electrodes; lamps; sodium; electrode erosion; electrode surface; intensity emission; pulse operated high-pressure-sodium lamp; thermionic state; vapor arc mode; Barium; Cathodes; Coils; Electrodes; Electronic ballasts; Frequency; Ignition; Lamps; Pulsed power supplies; Voltage;
Conference_Titel :
Industry Applications Conference, 2004. 39th IAS Annual Meeting. Conference Record of the 2004 IEEE
Print_ISBN :
0-7803-8486-5
DOI :
10.1109/IAS.2004.1348589
