Widely used in the electronics industry, electric light source industry, also used in gas lasers and plasma streams. Compared with the same-power argon-filled bulb, the bulb filled with pure helium has the advantages of high luminous efficiency, small volume, long life, and power saving. It is widely used in the manufacture of miner's lamps, and because of its high transmittance, it can be used to manufacture illuminating lights and airstrip lights for night-time combat vehicles. Health care is used to measure cerebral blood flow. Its isotope can be used as a tracer. Radioactive cesium can be used for leak detection of closed containers and continuous measurement of material thickness, and can also be made into atomic lamps that do not require electrical energy. In addition, Kr 86 is used for international benchmarking of length and Kr 85 is used for “deuteration” of materials.

Lighting industry

Helium has a larger molecular weight than argon and a lower thermal conductivity, making helium an excellent filling gas. Lamps filled with helium are: incandescent lamps, fluorescent lamps, flashing arc lamps, iodine lamps, and the like. Xenon lamp saves 20%~25% compared with the same power argon lamp, and its life is 2~3 times longer. On the airport runway, it is usually illuminated with a xenon-filled flashing arc because it has a strong ability to penetrate the fog. Xenon absorbs X-rays and can be used as a shading material for X-ray operation. It can be used to make atomic lamps that do not require electrical energy. Xenon lamps have a particularly high transmission rate and can be used for lights on off-road vehicles in night battles.