A mass spectrum is a plot of the ionic beam intensity as a function of the mass-to-charge ratio of the ionic fragment.
The beam intensity was estimated at about 109 photons/s.
Clear pixels don't affect the beam intensity, but dark pixels block or dampen it.
a Branched nanostructure development under relatively low beam intensity, b unbranched nanoline development under relatively high beam intensity, c and d secondary electron intensity distribution and nanostructure evolution under low and high beam intensity.
A photodiode upstream the sample allows a continuous measurement of the incoming beam intensity.
By allowing higher convergence angles, the beam intensity also increased, which is important for chemical analysis.
This effect depends on the beam intensity and concentration of the target material.
The high pressure used in the valve and some nozzle shaping contribute to the beam intensity.
The relative counts are not significant because they were dominantly due to the ion beam intensity.
Note that the influence of the regional fluctuation in beam intensity has been negated.
