ENDF/B-VII.0 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. Material Relative 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.