A beam of electrons is produced at the top of the microscope by an electron gun. The electron beam follows a vertical path through the microscope, which is held within a vacuum. The beam travels ...

In scanning electron microscopy, a thermionic electron source such as a tungsten ... A vacuum provides the needed insulation to prevent "arching" or jumping of high voltages in the electron gun. The ...

"With this microscope, we hope the scientific community ... To accomplish this, the physicists behind the new study tweaked an electron gun until it produced a pulse of just one attosecond.

The thermionic electron gun can be set from 1-20kV ... Our transmission electron microscope is a JEOL JSM-2000EX. The JSM 2000EX has an accelerating voltage of 80-200 kV. This instrument has a lattice ...

enabling us to see objects that are much smaller than anything a light microscope could reveal. The SEM is composed of several key components that each play a critical role: Electron Source or 'Gun': ...

The main platform showcases an electron gun, encased within a glass jar that ... as either an electron beam welder or scanning electron microscope (SEM). During operation, the power supply ...

This instrument is an advanced and digitally dedicated transmission electron microscope operating at 200kV with a field-emission gun. It is capable of an ultimate point-to-point resolution of 0.19 nm, ...