Electrodeless mercury lamp

Abstract

The invention discloses an electrodeless mercury lamp which comprises a lens set, a mercury bulb, an excitation source and a temperature control device. The mercury bulb comprises a light-emitting part and a cold end part communicated with the light-emitting part, the light-emitting part is cylindrical, the cold end part is cylindrical or in a cuboid shape, and the diameter of the connecting portion of the light-emitting part and the cold end part is smaller than that of the light-emitting part. The mercury bulb is filled with pure mercury or isotope Hg2O2. A double-bulb structure is adopted for the mercury bulb, bulb bodies for emitting light and storing mercury are subjected to function separation, meanwhile, the light-emitting part and the cold end part are communicated through the small-diameter connecting portion, the light-emitting part is coupled with an external coil to emit light, and the cold end part stores mercury and is connected with the temperature control device. By means of the structure, liquid-state mercury cannot flow in into the light-emitting part easily, and the phenomenon that mercury permeates into bulb walls of the light-emitting part to be nebulized due to loss is weakened. In addition, common cold ends are mostly thin and short, the cold end part and the light-emitting part are almost identical in size, the contact area of the cold end and the temperature control device is large, and heat radiation temperature control is easy.

Description

technical field [0001] The invention relates to the field of electrodeless lamps. More specifically, it relates to an electrodeless mercury lamp. Background technique [0002] In order to meet the urgent needs of satellite navigation, space exploration and time-frequency applications in special places, higher and higher requirements for time accuracy and stability are put forward. Atomic clocks use atomic spectral line transition frequency as the time standard with high precision and high stability. The characteristics are widely used in the time-frequency field. Traditional atomic clocks include hydrogen clocks and rubidium clocks. However, hydrogen clocks are large in size and high in index, while rubidium clocks are small in size and index is lower than that of hydrogen clocks. Microwave clocks based on mercury ions can achieve the high precision and high reliability of hydrogen clocks. Similar to clocks, it has significant advantages in future time-frequency applicatio...

AI Technical Summary

Problems solved by technology

Electrodeless mercury lamps using the transition line of mercury ions at 194.2nm are still blank in the market, and the above-mentioned mercury lamps on the market are too large to meet the requirements of small size and high indicators.

Most of the traditional electrodeless mercury lamps use solid mercury amalgam, which contains other impurities. The radiation spectrum line is relatively complicated. The radiation spectrum line of mercury ion in the electrodeless mercury lamp mainly radiates the transition line of mercury atoms is weak, which cannot meet the requirements of mercury ion microwave. Radiation 194nm Mercury Lamp Requirements in Frequency Standards

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