Electrodeless HID lamp study. Final report. [High intensity discharge]
High intensity discharge lamps excited by solenoidal electric fields (SEF/HID) were examined for their ability to give high brightness, high efficacy and good color. Frequency of operation was 13.56 MHz (ISM Band) and power to the lamp plasma ranged from about 400 to 1000 W. Radio frequency transformers with air cores and with air core complemented by ferrite material in the magnetic path were used to provide the voltage for excitation. Electrical properties of the matching network and the lamp plasma were measured or calculated and total light from the lamp was measured by an integrating sphere. Efficacies calculated from measurement were found to agree well with the positive column efficacies of conventional HID lamps containing only mercury, and with additives of sodium, thallium, and scandium iodide. Recommendations for future work are given.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA); General Electric Co., Schenectady, NY (USA). Corporate Research and Development Center
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6001988
- Report Number(s):
- LBL-19035; EEB-L-85-01; ON: DE85010626
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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