1.3.2 Comparison with Other Nuclides
Table 1.1 summarizes the generation rate of
AÀ1 X from of 1 g of a fission product
A X with photon flux 2 Â 10
12 /s also for
129
I,
135 Cs, and
90 Sr in addition to
137 Cs.
The reduction rate, which is nearly equal to the generation rate of
AÀ1 X, does not
depend significantly on nuclides because the properties of GDR are smooth functions of the mass number. From this table, we can see that the reduction rate for the
transmutation of
137 Cs can be similar to that of other medium nuclides.
2m
137 Cs (1g)
Scattered photons
( =[B(n),B(2n)]=[8.28,15.1]MeV)
Laser photons (0.7eV)
Incident electrons
(1.2GeV)
2mm
2
Fig. 1.4 Setup for calculation of transmutation of
137
Cs
1×10
19
1×10
20
1×10
21
1×10
22
0
5
10
15
20
Number of
137
Cs
Irradiation Time (h)
N g = 10
12 /s
10
18 /s
10
19 /s
10
20 /s
Fig. 1.5 Dependence of the
reduction of 1 g
137
Cs on
photon flux
N γ ¼ 10
12 , 10
18
, 10
19
, 10
20
/s
1 Nuclear Transmutation of Long-Lived Nuclides with Laser Compton Scattering. . .
9