What is JEOL EB Tungsten Filament？

The full name of JEOL is Japanese Electron Optics Laboratory. After decades of exploration and research by the world’s top scientific instrument manufacturers, they create the brand JEOL. Nowadays, JEOL products are widely applied in the fields of medicine, biology, biochemistry, agriculture, material science, metallurgy, chemical, petroleum, pharmaceuticals, semiconductor and electronics. EB (electron beam) tungsten filament of JEOL is known to the Chinese businessmen. So far, there are more than 2000 users of JEOL in China. In China, EB tungsten filament of JEOL is used by a key laboratory sciences sector, research institutes, universities, medical institutions, government agencies and enterprises.

EB tungsten filament of JEOL has a strong vacuum system, which is widely applied in a SEM (scanning electron microscope). EB tungsten filament of JEOL uses the newest electro-optical systems to enhance the image quality scanning electron microscope. The main specifications of EB tungsten filament of JEOL are 0.55mm of mosquito type, 0.65mm of mosquito type, 0.8mm of mosquito type, 0.8mm of eccentric type and 0.55mm of half-moon type. EB tungsten filament of JEOL has a strong plasticity in maintaining electron gun and optical coating.

EB tungsten filament of JEOL is made of tungsten with a high-grade.  Its features are high melting point and low coefficients of thermal expansion. This kind of tungsten is the best material for EB tungsten filament. The main types of EB tungsten filament of JEOL is K type. The diameter of its ceramic plate is 28.0 mm, the pin diameter is 1.2 mm, and the distance of center pin is 8.0 mm.