116
M. Yamanaka
Table 4.18 Comparison between measured and calculated reactivity [pcm] with JENDL-4.0 (# of
HEU plates: 3008; critical core in Fig. A4.4 and Table 4.15) (Ref. [23])
ρ cal
J40
ρ
exp
J40
C/E (ρ cal
J40 /ρ
exp
J40 )
Excess reactivity
106.1 ± 5.7
100.2 ± 1.7
1.06 ± 0.06
MCNP6.1 with JENDL-4.0: β eff = 812 ± 10 [pcm], = 31.57 ± 0.07 [μs]
Table 4.19 Comparison between measured and calculated reactivity [pcm] with ENDF/B-VII.1 (#
of HEU plates: 3008; critical core in Fig. A4.4 and Table 4.15) (Ref. [23])
ρ cal
E71
ρ
exp
E71
C/E (ρ cal
E71 /ρ
exp
E71 )
Excess reactivity
97.6 ± 5.6
84.7 ± 1.5
1.15 ± 0.07
MCNP6.1 with ENDF/B-VII.1: β eff = 802 ± 10 [pcm], = 31.30 ± 0.07 [μs]
Fig. 4.13 Comparison
between fraction β i (i =
1–6) by JENDL-4.0 and
ENDF/B-VII.1 (# of HEU
plates: 3016; critical state in
Fig. A4.1 and Table 4.14)
(Ref. [23])
1
2
3
4
5
6
0
100
200
300
Precursor group i
Fraction
i [pcm]
JENDL-4.0
ENDF/B-VII.1
Fig. 4.14 Comparison
between decay constant λ i
(i = 1–6) by JENDL-4.0 and
ENDF/B-VII.1 (# of HEU
plates: 3016; critical state in
Fig. A4.1 and Table 4.14)
(Ref. [23])
1
2
3
4
5
6
1.00
2.00
3.00
Precursor group i
Decay constant
i [1/s]
JENDL-4.0
ENDF/B-VII.1