-12
-10
-8
-6
-4
-2
Slope= 0.084
Slope= 0.074
NaPEC x=0.50
CsPEC x=0.50
20 30 40 50 60 70 80 90
RH in %
20 30 40 50 60 70 80 90
NaPEC x=0.55
CsPEC x=0.55
Slope= 0.073
Slope= 0.071
RH in %
20 30 40 50 60 70 80 90
-12
-10
-8
-6
-4
-2
Slope= 0.081
Slope= 0.077
NaPEC x=0.60
CsPEC x=0.60
RH in %
20 30 40 50 60 70 80 90
NaPEC x=0.65
CsPEC x=0.65
Slope= 0.076
Slope= 0.081
RH in %
20 30 40 50 60 70 80 90
-12
-10
-8
-6
-4
-2
NaPEC x=0.70
CsPEC x=0.70
Slope= 0.081
Slope= 0.070
RH in %
20 30 40 50 60 70 80 90
Slope= 0.074
Slope= 0.066
NaPEC x=0.75
CsPEC x=0.75
RH in %
log
10
(s
dc ·W·cm)
log
10
(s
dc ·W·cm)
log
10
(s
dc ·W·cm)
Fig. 16 Plots of logarithm of σ dc versus RH for similar compositions of NaPEC and CsPEC [66]
122
C. Cramer and M. Scho ¨nhoff