Typically these devices can be removed or inserted into the beam path by the operator as required.
Also required is a device to allow the insertion into, motion within, and removal of specimens from the beam path.
This image provides the investigator with information about the space group symmetries in the crystal and the crystal's orientation to the beam path.
Be sure your spiral doesn't cross the beam path.
The measured phase is proportional to the average plasma electron density along the beam path.
I was sure I had gone to a beam path high enough to override this devil's capture mode.
So, the beam path is a race-track shaped oval.
Usually, there are separate transmitter and receiver units at either end of a straight beam path.
The space warp device under evaluation is to be placed in or near one beam path.
The beam path can be seen when the electrons are accelerated through a helium (He) gas.