Chemistry Reference
In-Depth Information
0 3.3
×
10
-4
6.6
×
10
-4
9.9
×
10
-4
0 5.51
×
10
-5
1.10
×
10
-4
1.65
×
10
-4
(a)
Map of
D
, fractional eq.
(b)
Map of
D
,
stretched exponential.
15
10
5
0
0.0003
0.0004
0.0005
0.0006
0.0007
0.0008
0.0009
D
mm
2
s
1
(c)
Histogram of
D
,
fractional fit.
15
10
5
0
0.0002
0.0004
0.0006
0.0008
D
mm
2
s
1
(d)
Histogram of
D
, stretched exp.
Figure 31.
A comparison (in GM) of the calculated diffusion coefficients using (a) the fractional
diffusion equation and (b) the stretched exponential equation. (a) Shows a map of the parameter
D
using
the fractional diffusion equation. (b) Shows a map of the parameter
D
using the stretched exponential
equation. (c) Is a frequency distribution of the values displayed in (a) with a mean of 0.39
±
0.19
×
10
−
3
mm
2
s
−
1
. (d) Is a histogram of the mapped values in (b) with a mean of 0.32
±
0.14
×
10
−
3
s
−
1
. (See insert for color representation of the figure).
mm
2
