| 摘要 |
PURPOSE:To increase light emission in near infrared region and to improve arc stability by encapsulating specific halide together with rare gas and mercury. CONSTITUTION:More than one kind of halides including rubidium, potassium, sodium, cesium, hafnium, zirconium and chromium is encapsulated together with rare gas or mecury in a transparent light emission tube 1. Here halogen composing said halide is more than two kinds among iodine, bromine and chlorine. Consequently complex compound such as Cs2IBr is formed to increase steam pressure when compared with mono-halide thus to increase radiating power. Dessociation of arc near the tube wall is reduced when compared with metal iodide to improve arc stability. |
