Embed Size (px)
Citation preview
ENDF/B-VI U-238BPrincipal cross sections
10-11 10-10 10-9 10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 101
Energy (MeV)
10-1
100
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
totalabsorptionelasticgamma production
ENDF/B-VI U-238Bresonance total cross section
10-6 10-5
Energy (MeV)
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
total
ENDF/B-VI U-238Bresonance total cross section
10-5 10-4
Energy (MeV)
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
total
ENDF/B-VI U-238Bresonance total cross section
10-4 10-3
Energy (MeV)
100
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
total
ENDF/B-VI U-238Bresonance total cross section
10-3 10-2
Energy (MeV)
100
101
102
103
Cro
ss s
ectio
n (b
arns
)
total
ENDF/B-VI U-238Bresonance total cross section
10-2 10-1
Energy (MeV)
101
Cro
ss s
ectio
n (b
arns
)
total
ENDF/B-VI U-238Bresonance total cross section
100 101
Energy (MeV)
101
Cro
ss s
ectio
n (b
arns
)
total
ENDF/B-VI U-238Bresonance absorption cross sections
10-6 10-5
Energy (MeV)
10-2
10-1
100
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
capturefission
ENDF/B-VI U-238Bresonance absorption cross sections
10-5 10-4
Energy (MeV)
10-2
10-1
100
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
capturefission
ENDF/B-VI U-238Bresonance absorption cross sections
10-4 10-3
Energy (MeV)
10-3
10-2
10-1
100
101
102
103
Cro
ss s
ectio
n (b
arns
)
capturefission
ENDF/B-VI U-238Bresonance absorption cross sections
10-3 10-2
Energy (MeV)
10-4
10-3
10-2
10-1
100
101
102
Cro
ss s
ectio
n (b
arns
)
capturefission
ENDF/B-VI U-238Bresonance absorption cross sections
10-2 10-1
Energy (MeV)
10-6
10-5
10-4
10-3
10-2
10-1
100
Cro
ss s
ectio
n (b
arns
)
capturefission
ENDF/B-VI U-238Bresonance absorption cross sections
10-1 100
Energy (MeV)
10-4
10-3
10-2
10-1
Cro
ss s
ectio
n (b
arns
)
capturefission
ENDF/B-VI U-238BUR total cross section
10-2 10-1
Energy (MeV)
101
Cro
ss s
ectio
n (b
arns
)
Inf. Dil.100 b1 b
ENDF/B-VI U-238BUR elastic cross section
10-2 10-1
Energy (MeV)
101
Cro
ss s
ectio
n (b
arns
)
Inf. Dil.100 b1 b
ENDF/B-VI U-238BUR fission cross section
10-2 10-1
Energy (MeV)
10-3
10-2
10-1
Cro
ss s
ectio
n (b
arns
)
Inf. Dil.100 b1 b
ENDF/B-VI U-238BUR capture cross section
10-2 10-1
Energy (MeV)
10-1
100
Cro
ss s
ectio
n (b
arns
)
Inf. Dil.100 b1 b
ENDF/B-VI U-238BHeating
10-11 10-10 10-9 10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 101
Energy (MeV)
10-4
10-3
10-2
10-1
100
101
Hea
ting
(MeV
/rea
ctio
n)
heating
ENDF/B-VI U-238BDamage
10-11 10-10 10-9 10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 101
Energy (MeV)
10-7
10-6
10-5
10-4
10-3
10-2
10-1
Dam
age
(MeV
-bar
ns)
damage
ENDF/B-VI U-238BNon-threshold reactions
10-11 10-10 10-9 10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 101
Energy (MeV)
10-2
10-1
100
101
102
103
104
Cro
ss s
ectio
n (b
arns
)
(n,f)(n,gma)
ENDF/B-VI U-238BPrincipal cross sections
2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0
2
4
6
8
10
12
14
16
Cro
ss s
ectio
n (b
arns
)
totalabsorptionelasticgamma production
ENDF/B-VI U-238BHeating
0 5 10 15 20
Energy (MeV)
0
5
10
15
20
25
30
35
40
Hea
ting
(MeV
/rea
ctio
n)
heating
ENDF/B-VI U-238BDamage
0 2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0
20
40
60
80
100
120
140
160*10-3
Dam
age
(MeV
-bar
ns)
damage
ENDF/B-VI U-238BNon-threshold reactions
0 2 4 6 8 10 12 14 16 18 20
Energy (MeV)
10-4
10-3
10-2
10-1
100
Cro
ss s
ectio
n (b
arns
)
(n,f)(n,gma)
ENDF/B-VI U-238BInelastic levels
0 2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Cro
ss s
ectio
n (b
arns
)
(n,n*1)(n,n*2)(n,n*3)(n,n*4)(n,n*5)
ENDF/B-VI U-238BInelastic levels
0 2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Cro
ss s
ectio
n (b
arns
)
(n,n*6)(n,n*7)(n,n*8)(n,n*9)(n,n*10)
ENDF/B-VI U-238BInelastic levels
0 2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0
50
100
150
200
250
300
350*10-3
Cro
ss s
ectio
n (b
arns
)
(n,n*11)(n,n*12)(n,n*13)(n,n*14)(n,n*15)
ENDF/B-VI U-238BInelastic levels
2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0
50
100
150
200
250
300*10-3
Cro
ss s
ectio
n (b
arns
)
(n,n*16)(n,n*17)(n,n*18)(n,n*19)(n,n*20)
ENDF/B-VI U-238BInelastic levels
2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0
50
100
150
200
250
300*10-3
Cro
ss s
ectio
n (b
arns
)
(n,n*21)(n,n*22)(n,n*23)(n,n*24)(n,n*25)
ENDF/B-VI U-238BInelastic levels
2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0
20
40
60
80
100*10-3
Cro
ss s
ectio
n (b
arns
)
(n,n*26)(n,n*27)
ENDF/B-VI U-238BThreshold reactions
2 4 6 8 10 12 14 16 18 20
Energy (MeV)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Cro
ss s
ectio
n (b
arns
)
(n,2n)(n,3n)(n,4n)(n,n*c)
ENDF/B-VI U-238BHigh-order fission reactions
4 6 8 10 12 14 16 18 20
Energy (Mev)
0.0
0.1
0.2
0.3
0.4
0.5
Cro
ss s
ectio
n (b
arns
)
(n,n*f)(n,2nf)(n,3nf)
ENDF/B-VI U-238Bangular distribution for elastic
10-4
10-2
100
Pro
b/C
os
-1.0
-0.5
0.0
0.5
1.0Cosine
0
2
4
6
8
10*10-3
Energy (MeV)
ENDF/B-VI U-238BTotal fission nubar
0 5 10 15 20
Energy (MeV)
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Fis
sion
nub
ar
ENDF/B-VI U-238BDelayed nubar
0 5 10 15 20
Energy (MeV)
20
25
30
35
40
45
50
55*10-3
Del
ayed
nub
ar
ENDF/B-VI U-238BDelayed neutron spectra
10-5 10-4 10-3 10-2 10-1 100
Energy (MeV)
10-2
10-1
100
Pro
babi
lity
group 1 frac 0.0139 decay/shake 1.363E-10group 2 frac 0.1128 decay/shake 3.133E-10group 3 frac 0.1310 decay/shake 1.233E-09group 4 frac 0.3851 decay/shake 3.237E-09group 5 frac 0.2540 decay/shake 9.060E-09group 6 frac 0.1031 decay/shake 3.049E-08
ENDF/B-VI U-238BPhoton emission for fission
10-4
10-2
100
Pro
b/M
eV
0
5
10
Eγ (MeV)
0
5
10
15
20
E n (MeV)
ENDF/B-VI U-238BPhoton emission for (n,gma)
10-3
10-1
101
Pro
b/M
eV
0
2
4
6
Eγ (MeV)
0
5
10
15
20
E n (MeV)
ENDF/B-VI U-238BPhoton emission for nonelastic
10-1
101
Pro
b/M
eV
0
5
10
Eγ (MeV)
0
2
4
6
810
1214
1618
20
E n (MeV)
ENDF/B-VI U-238Bthermal capture photon spectrum
0 2 4 6
Gamma Energy (MeV)
10-1
100
101
102
Gam
ma
Pro
d (b
arns
/MeV
)
ENDF/B-VI U-238B14 MeV photon spectrum
0 2 4 6 8
Gamma Energy (MeV)
10-2
10-1
100
101
102
103
Gam
ma
Pro
d (b
arns
/MeV
)
