Table of Contents
Advertisement
Figure 2.20 – Control of the current activity value with the help of the cursor
2.12 If the band shape becomes stable, i.e. its edges are coming together
towards the horizontal central line in a stable and continuous manner (ideally as in
Figure 2.13), one can anticipate that this very central line will later on converge
with the most accurate value of the specific activity. Thus we can predictably
accept a central value of the band as a final measurement result. In such a way
measurement can be rather time-effective, but its result should be treated with care
and such predictions should be allowed only when measurements are not very
critical.
2.13 The issue of radiocesium absence is a separate task. If the band surface
covers the zero line, it means that cesium is probably absent. There are some
aspects described below.
2.13.1 If the band center coincides with the zero line (Figure 2.21 shows that
the red line-cursor is at zero position and in the center at the same time), this is the
(a) correct cursor position
(b) incorrect cursor position
39
Advertisement
Table of Contents
