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Covariance Data Processing and Plots



Covariance data in ENDF/B-VI.8 (47 materials), ENDF/B-VII.0 (26 materials), JEFF-3.1 (37 materials) and JENDL-3.3 (20 materials) were processed using ERRORJ-2.3 (patched version) which is currently being reintegrated into NJOY. Processing was performed on NNDC's Linux Cluster using the 44- and 187-group energy structures and the constant-flux weighting function. The table below presents the plots (in Acrobat format) generated under each library. Please note that a shaded cell in the table indicates that the material in the pertinent library does not contain covariance data.


ENDF/B-VI.8 (2001) ENDF/B-VII.0 (2006) JEFF-3.1 (2005) JENDL-3.3 (2002)
No.
Material
44-Group
187-Group
44-Group
187-Group
44-Group
187-Group
44-Group
187-Group
1
H-1
(4 plots)
(4 plots)
2
H-3
(6 plots)
(6 plots)
3
Li-6
(1 plot)
(1 plot)
4
Li-7
(24 plots)
(24 plots)
(24 plots)
(33 plots)
5
Be-9
*
*
6
B-10
(5 plots)
(5 plots)
(15 plots)
(15 plots)
7
B-11
(4 plots)
(4 plots)
8
C-nat
(35 plots)
(36 plots)
(35 plots)
(35 plots)
9
O-16
(40 plots)
(40 plots)
10
F-19
(34 plots)
(37 plots)
(10 plots)
(10 plots)
(34 plots)
(34 plots)
11
Na-23
(78 plots)
(91 plots)
(4 plots)
(4 plots)
(38 plots)
(38 plots)
12
Si-nat
(22 plots)
(22 plots)
13
Si-28
(39 plots)
(39 plots)
*
*
14
Si-29
(37 plots)
(37 plots)
15
Si-30
(37 plots)
(37 plots)
16
Ti-46
*
*
(43 plots)
(47 plots)
17
Ti-47
*
*
(42 plots)
(48 plots)
18
Ti-48
*
*
(7 plots)
**
(39 plots)
(42 plots)
(8 plots)
(8 plots)
19
Ti-49
(38 plots)
(42 plots)
20
Ti-50
(38 plots)
(38 plots)
21
V-nat
(4 plots)
(4 plots)
(1 plot)
(1 plot)
(4 plots)
(4 plots)
(6 plots)
(6 plots)
22
Cr-50
(28 plots)
(29 plots)
(28 plots)
(29 plots)
23
Cr-52
(31 plots)
(33 plots)
(44 plots)
(47 plots)
(42 plots)
(47 plots)
24
Cr-53
(33 plots)
(33 plots)
(33 plots)
(33 plots)
25
Cr-54
(21 plots)
(21 plots)
(21 plots)
(21 plots)
26
Mn-55
(43 plots)
(43 plots)
(45 plots)
(45 plots)
(45 plots)
(45 plots)
27
Fe-54
(28 plots)
(29 plots)
(28 plots)
(30 plots)
28
Fe-56
(39 plots)
(39 plots)
(52 plots)
(54 plots)
(37 plots)
(37 plots)
29
Fe-57
(24 plots)
(26plots)
(24 plots)
(26 plots)
30
Fe-58
(22 plots)
(22 plots)
(21 plots)
(21 plots)
31
Co-59
(4 plots)
(4 plots)
(4 plots)
(4 plots)
(4 plots)
(4 plots)
(6 plots)
(6 plots)
32
Ni-58
(30 plots)
(32 plots)
(1 plot)
(1 plot)
(50 plots)
(56 plots)
(42 plots)
(54 plots)
33
Ni-60
(33 plots)
(36 plots)
(45 plots)
(45 plots)
(46 plots)
(55 plots)
34
Ni-61
(28 plots)
(29 plots)
(28 plots)
(29 plots)
35
Ni-62
(25 plots)
(26 plots)
(25 plots)
(26 plots)
36
Ni-64
(24 plots)
(24 plots)
(24 plots)
(24 plots)
37
Cu-63
(35 plots)
(35 plots)
(6 plots)
(6 plots)
38
Cu-65
(36 plots)
(38 plots)
(36 plots)
(38 plots)
39
Y-89
(8 plots)
(8 plots)
(11 plots)
(11 plots)
(8 plots)
(8 plots)
40
Zr-90
(3 plots)
(3 plots)
(3 plots)
(3 plots)
41
Nb-93
(6 plots)
(6 plots)
(1 plot)
(1 plot)
(6 plots)
(6 plots)
42
Tc-99
(6 plots)
(6 plots)
43
In-nat
(5 plots)
(5 plots)
44
In-115
*
*
45
Gd-152
(7 plots)
(7 plots)
46
Gd-153
(7 plots)
(7 plots)
47
Gd-154
(8 plots)
(8 plots)
48
Gd-155
(7 plots)
(7 plots)
49
Gd-156
(8 plots)
(8 plots)
50
Gd-157
(7 plots)
(7 plots)
51
Gd-158
(8 plots)
(8 plots)
52
Gd-160
(8 plots)
(8 plots)
53
Re-185
(1 plot)
(1 plot)
(1 plot)
(1 plot)
54
Re-187
(1 plot)
(1 plot)
(1 plot)
(1 plot)
55
Ir-191
(6 plots)
(6 plots)
56
Ir-193
(6 plots)
(6 plots)
57
Au-197
(1 plot)
(1 plot)
(1 plot)
(1 plot)
(1 plot)
(1 plot)
58
Pb-206
(20 plots)
(20 plots)
59
Pb-207
(22 plots)
(22 plots)
60
Pb-208
(20 plots)
(20 plots)
61
Bi-209
(6 plots)
(6 plots)
(1 plot)
(1 plot)
62
Th-232
(2 plots)
(2 plots)
(51 plots)
(54 plots)
63
U-233
(5 plots)
(5 plots)
(5 plots)
(5 plots)
64
U-235
(2 plots)
(2 plots)
(2 plots)
(2 plots)
(2 plots)
(2 plots)
(5 plots)
(5 plots)
65
U-238
(7 plots)
(7 plots)
(4 plots)
(4 plots)
66
Pu-239
(5 plots)
(5 plots)
67
Pu-240
(1 plot)
(1 plot)
(1 plot)
(1 plot)
68
Pu-241
(1 plot)
(1 plot)
(5 plots)
(5 plots)
69
Pu-242
*
*
70
Am-241
*
*
*
*
   *  Material could not be successfully processed.
  **  The 187-group energy structure is too detailed for this material.

Uncertainties of Thermal Neutron Capture Cross Sections
Source: S.F. Mughabghab, Atlas of Neutron Resonances. Amsterdam: Elsevier, 2006.
No.MaterialRelative Uncertainty(%)Comment
1
Li-6
7.79
Maxwellian spectrum
2
Li-7
5.94
Maxwellian spectrum
3
B-10
5.25
Maxwellian spectrum
4
F-19
0.95
Maxwellian spectrum
5
Na-23
0.77
6
Ti-48
1.92
Maxwellian spectrum
7
V-nat
0.79
8
Co-59
0.16
9
Ni-58
2.29
Maxwellian spectrum
10
Y-89
1.56
11
Nb-93
4.35
12
Tc-99
5.70
13
Gd-152
2.72
Maxwellian spectrum
14
Gd-153
13.45
Corrected uncertainty*
15
Gd-154
14.12
16
Gd-155
0.82
17
Gd-156
38.89
18
Gd-157
0.32
19
Gd-158
9.09
20
Gd-160
21.43
Maxwellian spectrum
21
Ir-191
1.05
22
Ir-193
4.50
23
Au-197
0.09
24
Bi-209
2.05
25
Th-232
0.41
26
U-235
0.81
*  Typo in Atlas: Correct absolute uncertainty is + 3000 b rather than + 300 b.

Top of Page Web: Ramon Arcilla, NNDC, Brookhaven National Laboratory
Last Modified: September 27, 2007