Wang proposed the electron gun as a research and development project back in 2017 and has been spearheading its design, engineering, assembly, and testing ever since. Much of the work and all the ...

Ion beam (IB) guns and electron beam (EB) guns are devices that emit charged particles (ions and electrons, respectively) directed in a beam which are used in surface analysis or preparation, particle ...

To accomplish this, the physicists behind the new study tweaked an electron gun until it produced a pulse of just one attosecond. These pulses hit the "sample" being studied, and as the electrons ...

A vacuum provides the needed insulation to prevent "arching" or jumping of high voltages in the electron gun. The gun itself is under extremely high vacuum conditions, requiring a pressure as low as ...

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 ...