228
M. Yamanaka
(a) EE1 core
(b) E3 core
-4.5E-02
-3.5E-02
-2.5E-02
-1.5E-02
-5.0E-03
5.0E-03
1.0E-04
1.0E-02
1.0E+00
1.0E+02
1.0E+04
1.0E+06
Sensitivity coefficient per lethargy [-]
Neutron energy [eV]
Al-27
B-10
B-11
C-12
H-1
O-16
U-234
U-235
U-236
U-238
H-1
U-235
Al-27
-4.5E-02
-3.5E-02
-2.5E-02
-1.5E-02
-5.0E-03
5.0E-03
1.0E-04
1.0E-02
1.0E+00
1.0E+02
1.0E+04
1.0E+06
Sensitivity coefficient per lethargy [-]
Neutron energy [eV]
Al-27
B-10
B-11
C-12
H-1
O-16
U-234
U-235
U-236
U-238
Al-27
H-1
U-235
Fig. 8.6 Sensitivity coefficients for capture reactions in excess reactivity (Ref. [1])
applying the cross-section adjustment method to the uncertainty analyses, the C/E
value of all excess reactivity and control rod worth in both EE1 and E3 cores reached
around a unit.