JAEA-Conf 2011-002 - 日本原子力研究開発機構

We evaluated the validity of the cross section libraries (JENDL-4.0,ENDF/B-VII.0 and JEFF-3.1) by
comparing infinite dilution 164 Dy cross section in SRAC library 107 energy groups. Dy capture rates of each
164
nuclide at E3 core are shown in Fig. 3. Dy has the largest capture rate in Dy at E3 core, and it is also similar
to that at EE1 core. And 164 Dy capture cross section has the difference at higher energy range among these
libraries as shown in Fig. 4. However, the energy range is different from the energy range where capture rate is
significant. Also Fig. 5 shows 164 Dy capture rate difference among these libraries, and the difference of
energy-integrated capture rate among these libraries is negligibly small by considering the magnitude of the
capture rate shown in Fig. 3. Therefore the influence on capture rate by the difference of the cross section
libraries is small at both E3 and EE1 cores, and the tendency is consistent to the results of C/E value shown in
Fig. 2.
Fig. 3 Dy capture rate in each nuclide at E3
JAEA-Conf 2011-002
Fig. 4 164 Dy capture cross section
Fig. 5 164
Dy capture rate difference at E3 core (left) and EE1 core (right)
Er capture rates of each nuclide at E3 core are shown in Fig. 6. 167 Er has the largest capture rate in Er at
E3 core, and it is also similar to that at EE1 core. And 167 Er capture cross section has the difference in
resonance region among libraries (JENDL-4.0,ENDF/B-VII.0 and JEFF-3.1) shown in Fig. 7. However, the
energy range is not dominant on energy-integrated capture rate. Fig. 8 shows 167 Er capture rate difference