Home > News > Content
Electronic Gases Application Of Low Temperature Engineering
Jul 27, 2017

Electronic Gases Application of low temperature engineering

Neon due to the production of small, relatively high cost, usually only in a number of special instruments, electric light source, low temperature research and preparation of deep sea diving breathing gas and other fields. Now the international supply and demand of neon is very tight, especially to the end of the year, special gas neon, neon helium mixture export volume is in short supply. Today Xiaobian and everyone to share what is the use of neon? Listed three small neon use of small partners who used it?

 (A) neon use of neon low temperature engineering applications

It is well known that the liquid temperature range of helium is 2 × 10-3-5.20K, the liquid temperature range of hydrogen is 14.2-33.0K, and the liquid temperature range of neon is 24.5-44.40K. Because neon has a chemical inertness, and the latent heat of evaporation (according to the same volume of liquid, liquid neon refrigeration can be 2.7 times the liquid hydrogen), therefore, in 25-40K, often with neon instead of hydrogen as an experimental coolant. It is easy to make the liquid neon into solid neon because the temperature of the three-phase point of neon is only about 2.5K lower than its standard boiling point. When neon is used as refrigerant, the melting latent heat of solid neon is used Can increase the effective cooling capacity of neon 20%. In order to be able to quickly evacuate large space into a vacuum state, often use liquid helium cryogenic pump, if the vacuum is not high, you can also use liquid neon cryogenic pump. A closed-loop miniature chiller made of neon-made medium can be used as an infrared detector for missiles. Liquid neon is often used in the bubble chamber for high energy particle detection and research. In the United States, neon is mainly used in the bubble chamber, and a large one-time demand. In addition, liquid neon is also used for free radical studies. With the continuous development of science and technology, liquid neon as 25-40K low temperature coolant will be increasingly attention.

In addition, since the thermal noise in many electronic devices is reduced at low temperatures, many radio, infrared and other radiation detection instruments can be cooled using neon cycles to increase their sensitivity.

(B) the use of neon gas source gas and gas detection

In almost all modern light sources are used in helium gas, neon is mainly used to fill a variety of fluorescent lamps, light-emitting signal devices and glow lamps and so on.

For low-pressure discharge tube, in the clean glass tube, pure neon produce orange light, neon and argon, helium mixed in different proportions, filled with a variety of filter glass tube, can be made of colorful neon (font display light). Neon low-voltage discharge tube is widely used as a light. As the neon light emitted by the red light transmission ability, long-term non-neon are not used to fill a variety of signal devices, as ports, airports, stations and other places of water and land traffic signs.

The neon is used for the radioactive ionization detector, and a mixture of neon, argon and helium is used in the Geiger-Muller counter. In addition, in some high-voltage tube switch and adjust the tube, you can also fill the neon. In tracer particle detectors, neon is the filling gas commonly used in the spark chamber and the electron flow chamber. Liquid neon is also widely used in low temperature radiation detectors, as well as other specialized instruments for space exploration programs. Neon mixed with argon, helium and mercury vapor can be used to fill the phosphorescent tube. Neon and argon can be used to fill the thyratron radio tube. Laser technology Widely used helium gas, neon-helium continuous lasers are widely used in optical applications where the power is only zero watts.