Potential Role of Lasers for Sustainable Fission Energy Production and Transmutation of Nuclear Waste
While means for transmutation of nuclear waste using fast reactor technology and reprocessing have existed for many years, this technology has not been deployed primarily for economic reasons but also owing to safety and proliferation concerns. Geological storage also remains politically uncertain in some countries as a means for disposal of nuclear waste. We argue here that neutrons supplemental to fission neutrons first from accelerators and later from fusion combined with subcritical systems could displace the need for reprocessing at less cost than reprocessing. Nearly all of the actinide and long-lived fission products from today’s reactors could be burned away without reprocessing and the full uranium and thorium resource, which is a greater energy resource than lithium-based d–t fusion, could also be exploited with concurrent burning of the waste. It is shown that a laser–fusion system driving a subcritical fission system and operating at physics breakeven with the recirculation of 10% of the fission electric power would match today’s accelerator–spallation technology as a subcritical fission driver and that a fusion system operating at engineering breakeven for driving a subcritical fission system probably exceeds the potential best performance of any known accelerator technology. This chapter advocates an innovative reactor technology beyond those envisaged 50 years ago that still dominate the field. It also calls for a focus of fusion research on fusion neutron production in addition to fusion energy as it shows that fusion-neutron–driven fission should reach technical and economic practicality long before the smaller resource of pure d–t fusion energy becomes practical.
KeywordsNeutron Production Fusion Energy Fusion Power Thermal Spectrum Minor Actinide
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- 1.D. Besnard: The Megajoule Laser: A High Energy Density Physics Facility, this conference, Lasers & Nuclei, ed by H. Schwoerer, J. Magill, B. Beleites (Springer Verlag, Heidelberg, 2005)Google Scholar
- 2.J. Magill, J. Galy, T. Zagar: Laser transmutation of nuclear materials. In: Int. Workshop on Lasers and Nuclei, Application of Ultra-High Intensity Lasers in Nuclear Science, Karlsruhe, Germany, September 13–15, 2004Google Scholar
- 3.IAEA: Implications of Partitioning and Transmutation in Radioactive Waste Management, Technical Reports Series No.435, 2005. See also J. Magill et al.: Nucl. Energy 42, 263–277 (2003)Google Scholar
- 4.V. Berthou, C. Degueldre, J. Magill: Transmutation characteristics in thermal and fast neutron spectra: Application to americium. J. Nucl. Mater. 320, 156–162 (2003).Google Scholar
- 5.C.D. Bowman: Thermal spectrum for nuclear waste burning and energy production. In: Proc. Int. Conf. Nucl. Data Sci. Techno. Santa Fe, NM (2004)Google Scholar
- 6.C.D. Bowman: Once-through Thermal-Spectrum Accelerator-Driven Waste Destruction Without Reprocessing. Nucl. Technol. 132, 66–93 (2000)Google Scholar
- 7.CRC Handbook of Chemistry and Physics, ed by David R. Lide (1992).Google Scholar
- 8.It is to be noted that the energy liberated in the production of tritium from neutron absorption on 6Li is not included in the power calculations since it might not be practical to convert that energy to electric power depending on the system design.Google Scholar
- 9.B.L. Cohen: Letter in Physics Today, p. 16 (November 2004) and B.L. Cohen, Am. J. Phys., 51, 75 (1983)Google Scholar
- 10.The National Ignition Facility (NIF) nearing completion of construction at the Lawrence Livermore National Laboratory at Livermore, CA, is described elsewhere in the proceedings of this workshop (see )Google Scholar