High Pressure Sulfur Microwave Lamps with Metal Halides Additives-Reference-Cited by-同舟云学术

High Pressure Sulfur Microwave Lamps with Metal Halides Additives

Published:2022-08 Issue:04-2022 Volume: Page:102-106
ISSN:2541-9935
Container-title:Light & Engineering
language:en
Short-container-title:L&E

Author:

Starostin Anrdrey I.¹,Irkhin Igor V.¹,Popov Oleg A.²,Bondarenko Svetlana M.¹

Affiliation:

1. VEI-branch of FSUE RFNC VNIITF

2. NRU MPEI

Abstract

Effects of metal halides additives on radiation characteristics of microwave-driven high pressure sulphur lamp were experimentally studied. Electrodeless discharge was excited and maintained in the mixture of sulphur vapour (5–6) atmospheres and vapour of NaI (~ 0.07 Torr) and LiI (~ 0.12 Torr) at microwave frequency of 2.45 GHz and power of (280–560) W in the quartz spherical bulb of 35 mm in diameter inserted in the cylindrical resonator of 73 mm in diameter and 125 mm in height. To maintain bulb walls at homogeneous temperature, the bulb was rotated with the speed of the 12 r/c. It was found that the addition of low pressure sodium and lithium halides caused the increase of lamp efficacy by (11–13) %, colour temperature by 16 %, and colour rendering index by 4 %. To further improve lamp characteristics, the increase of additives partial pressures was recommended.

Publisher

Redakcia Zhurnala Svetotekhnika LLC

Subject

General Medicine

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