Scienta R3000: non-linear intensity scale

R3000 XPS Intensity scale calibration

Note: All calibration curves were done with detector area set to 640x384 px², where 640px corresponds to full x (energy) scale, 384px to Y-(angular) scale between 53 and 436px.

Fixed Mode (Calibration → Voltages...→ Area)

Swept Mode

Graphs in higher resolution.

Approximate relation between intensity in swept and fixed mode (full detector range):

SES, Igor Pro:
Cps = C / n/ StepTime
where,
Cps = couts per second in fixed mode ( approximately what we see in Calibration → Voltages →Area)
C= counts acquired in swept angular mode
n = number of sweeps