Table 1.1 summarizes the generation rate ofA-1X from of 1 g of a fission product AX with photon flux 2 x 1012/s also for 129I, 135Cs, and 90Sr in addition to 137Cs. The reduction rate, which is nearly equal to the generation rate of A-1X, 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 137Cs can be similar to that of other medium nuclides.

1.2

Conclusion

In this work, the effectiveness of transmutation with laser Compton scattering for reducing fission products was quantitatively investigated. The transmutation of 137Cs is effective with photon flux greater than 1018/s, which results in 10 % reduction for 24 h irradiation. However, transmutation with photon flux 2 x 1012/s, which is achievable with present maximum accelerator systems, is not effective, and the reduction rate is approximately two orders of magnitude less than the natural decay rate.

Nuclear transmutation with laser Compton scattering can transmute selectively a medium mass nuclide AX into A-1X, and its reduction rate is independent of isotopes. Because the transmutation with laser Compton scattering can almost exclusively generate desired nuclides, this method will be useful for the generation of isotopes for medicine [1].

Open Access This chapter is distributed under the terms of the Creative Commons Attribution Noncommercial License, which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.