Authors & Affiliations

Korobeinikov V.V.1, Kolesov V.V.2, Terekhova A.M.2, Karazhelevskaya Yu.E.2
1A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
2Obninsk Institute for Nuclear Power Engineering, Obninsk, Russia

Korobeinikov V.V.1 – Chief Researcher, Dr. Sci. (Phys.-Math.), Professor. Contacts: 1, Sq. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.: +7 910 863 7098; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Kolesov V.V.2 – Associate Professor, Cand. Sci. (Phys.-Math.).
Terekhova A.M.2 – Senior Lecturer.
Karazhelevskaya Yu.E.2 – Graduate Student.

Abstract

Minor actinides (MA) — primarily, isotopes of neptunium, americium, and curium - attract particular attention due to their long-term radiotoxicity. Measures to reduce the increase in the number of minor actinides have not yet been taken their total number in the world is growing, and will reached more than 200 tons by 2020. Note that minor actinides, as well as nuclides formed as a result of neutron capture, have the ability to share, so it is necessary to investigate whether the nuclear reactor can work if only they are used as fuel? The paper examined the possibility of using fuels from MA alone in reactors without uranium or plutonium. From the results of comparing the fission and capture cross sections, it follows that fuel in the form of Am or Np-237 can only use a fast neutron reactor, since in the thermal and intermediate spectra the capture cross section significantly exceeds the fission cross section. The results of calculations of the active zones of a model fast reactor with fuel from one americium or neptunium-237 demonstrated the high speed of their transmutation and burning out.

Keywords
fast reactor, uranium, plutonium, burning, transmutation, metal fuel, minor actinides, americium, neptunium.

Article Text (PDF, in Russian)

References

UDC 621.039.5

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2020, issue 1, 1:6