208
C. H. Pyeon
Fig. 7.19 Reactivity
contributions of Pb isotope
reactions induced by
uncertainties (The error bars
indicate the standard
deviation evaluated by
JENDL-4.0.) (Ref. [2])
(a) JENDL-3.3 versus JENDL-4.0
(b) ENDF/B-VII.0 versus JENDL-4.0
(c) JEFF-3.1 versus JENDL-4.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
30.0
Pb-204
Pb-206
Pb-207
Pb-208
Reactivity (J33 - J40) [pcm]
capture
elastic
inelastic
-20.0
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
Pb-204
Pb-206
Pb-207
Pb-208
Reactivity (E70 - J40) [pcm]
capture
elastic
inelastic
-20.0
-15.0
-10.0
-5.0
0.0
5.0
10.0
15.0
20.0
Pb-204
Pb-206
Pb-207
Pb-208
Reactivity (F31 - J40) [pcm]
capture
elastic
inelastic
was also the same tendency as the sensitivity coefficients discussed in Sect. 7.3. With
ENDF/B-VII.0 and JEFF-3.1, the tendency was not found to be greatly different from
JENDL-4.0 as shown in Figs. 7.19c, d, respectively, except for the capture reactions
of
204, 207 Pb isotopes. Although most cross-section data of Pb isotopes are the same in
both ENDF/B-VII.0 and JEFF-3.1, a notable difference in
208 Pb inelastic scattering
cross sections was observed between the two libraries, through a comparison with
the standard deviation by JENDL-4.0.