Table 1.

The first zeros of Fourier signals and the variation of relative responses of lateral response of a single ion chamber for different sampling times

Sampling Time	Spatial frequency (mm−1)	Standard Deviation
100 ms	0.168	0.356
150 ms	0.163	0.354
200 ms	0.171	0.354
250 ms	0.154	0.353
300 ms	0.163	0.347