so our particle is an electron. Lasers use electrical power (or even another laser) to add energy to the gain medium, a substance that can engage in stimulated emission. The gain medium can be a ...

Combine field emission SEM (FE-SEM) technology with advanced analytics. Profit from proven Gemini electron optics. Choose from a variety of detector options: you can image particles, surfaces ...

Welcome to American Rifleman’s Gun Of The Week. For this episode, we have a version of Smith & Wesson’s Model 1854 lever-action that’s specifically made for field use. Meet the Model 1854 ...

Superradiant Smith-Purcell radiation (S-SPR) is a kind of free electron radiation with a train of free electron bunches ...

the cathode current is assumed to be due to the emission of electrons from a cold cathode by the high field before the cathode (field current). This high field is generated by the space charge of ...

“There was a bit of a blow up.” Zorko returned to the field and was not dragged to the bench, but the look on his face after turning back to the coach said it all. Footage later showed Zorko ...