Hochdrucknatriumdampflampe

摘要

The invention relates to a high pressure sodium discharge lamp. The boiler of said lamp is filled with sodium, mercury and xenon, with a weight percentage of sodium in the Na/Hg amalgam of about 12 % to about 20 %, with a xenon filling pressure in the cold state between about 180 torr and about 350 torr, with a distance to the dome of the two flanks of the Na-D line of the radiation spectrum of about 110 ANGSTROM to about 200 ANGSTROM . The percentage of radiation is about 14 % to about 18 % in the red spectral range at 635 nm to 750 nm. The percentage of radiation is about 7 % to 10 % in the blue spectral range at 380 nm to 500 nm. Said radiation percentages are provided to the radiation power in the spectral range of 380 nm to 780 nm. The inventive lamp promotes plant growth.