A Determination of 59Ni and 55Fe Content in NPP Structural Elements


  • V.O. Zheltonozhsky Institute for Nuclear Research, Nat. Acad. of Sci. of Ukraine
  • D.E. Myznikov Institute for Nuclear Research, Nat. Acad. of Sci. of Ukraine
  • A.M. Savrasov Institute for Nuclear Research, Nat. Acad. of Sci. of Ukraine
  • V.I. Slisenko Institute for Nuclear Research, Nat. Acad. of Sci. of Ukraine




flux-weighted average yields, photoactivation method, gamma-spectrometry, nickel, ferrum


The structural materials from the 2nd unit of the Chornobyl NPP were irradiated by bremsstrahlung photons with an end-point energy of 37 MeV. From the measured y-spectra, using the ratios among the 57Co, 54Mn, and 58Co activities, the concentrations of 58Ni and 56Fe isotopes were determined in compare with the concentrations of 59Co. Using the obtained data and the measured 60Co activity in the studied samples, we developed a method for determining the 59Ni and 55Fe activities. Radiochemical validation of the created method was performed, and good quantitative agreement of 59Ni and 55Fe activities obtained by spectroscopic and radiochemical methods was found.


Y. Amano et al. Design of Instrumentation and Control System for Nuclear Power Plants. Specific Safety Guide (International Atomic Energy Agency, 2016).

Y. Amano et al. Construction for Nuclear Installations. Specific Safety Guide (International Atomic Energy Agency, 2015).

J.C. Evans et al. Long-Lived Activation Products in Reactor Materials (Pacific Northwest Laboratory, 1984).


E.A. Zhyrbenko, B.K. Bulkin. The main approaches to determining the activity of the structures of reactor units with VVER during their decommissioning. In: Proceedings of the 6th International Scientific and Technical Conference "Safety Assurance of NPP with VVER", Podolsk, May 26-29, 2009 (OKB Gidropress, 2009), p. 1 (in Russian).

V.A. Zheltonozhsky, D.E. Myznikov, V.I. Slisenko, M.V. Zheltonozhskaya, A.P. Chernyaev. Determination of the long-lived 10Be in construction materials of nuclear power plants using photoactivation method. J. Environ. Radioact. 227, 106509 (2021).


M.I. Aizatskyi, V.I. Beloglasov, V.N. Boriskin et al. State and prospects of the linac of nuclear-physics complex with energy of electrons up to 100 MeV. Probl. Atom. Sci. Techn. 91, 60 (2014).

R.B. Firestone. Table of Isotops. 8th Edition (Wiley Interscience, 1996).

S. Agostinelli et al. GEANT4 - a simulation toolkit. Nucl. Instrum. Meth. A 506, 250 (2003).

A.J. Koning, D. Rochman. Modern nuclear data evaluation with the TALYS code system. Nucl. Data Sheets 113, 2841 (2012).


V.O. Zheltonozhsky, D.E. Myznikov, A.M. Savrasov, V.I. Slisenko. Determination of the activity of 63Ni in NPP structural materials. Yadern. Fiz. Atom. Energ. 23, 207 (2022) [in Ukrainian].


Experimental Nuclear Reaction Data. https://wwwnds.iaea.org/exfor/.

R.A. Alvarez, B.L. Berman, D.D. Faul, F.H. Lewis Jr., P. Meyer. Photoneutron cross sections for 55Mn and 59Co. Phys. Rev. C 20, 128 (1979).

R.A. Alvarez, B.L. Berman, P. Meyer. Photonuclear cross sections of 58Ni and 60Ni. Phys. Rev. C 10, 608 (1974).

R.L. Bramblett, J.T. Caldwell, N.E. Hansen, C.P. Jupite. Photoneutron cross-sections for 51V and 59Co. Phys. Rev. 128, 2345 (1962).

J. Kopecky. Atlas of Neutron Capture Cross Sections (JUKO Research, 1997).



How to Cite

Zheltonozhsky, V., Myznikov, D., Savrasov, A., & Slisenko, V. (2023). A Determination of 59Ni and 55Fe Content in NPP Structural Elements. Ukrainian Journal of Physics, 67(10), 707. https://doi.org/10.15407/ujpe67.10.707



Fields and elementary particles

Most read articles by the same author(s)

  • O.S. Bakai, Yu.A. Berezhnoi, V.M. Beresnev, O.A. Bizyukov, V.A. Bilous, L.A. Bulavin, R.V. Vovk, I.Ye. Garkusha, I.O. Girka, D.L. Grekov, M.I. Gryshanov, I.B. Denysenko, I.M. Karnaukhov, V.O. Katrych, V.F. Klepikov, A.M. Kondratenko, O.Yu. Korchyn, V.M. Kuklin, V.T. Lazuryk, S.V. Lytovchenko, V.O. Lisovskyi, M.O. Mchedlov-Petrosyan, I.M. Neklyudov, V.P. Olefir, I.M. Onishchenko, V.G. Rudychev, V.I. Slisenko, Yu.V. Slyusarenko, V.Yu. Storyzhko, V.I. Tkachenko, V.O. Chyshkala, M.F. Shul’ga, A.G. Zagorodny, Mykola Oleksiyovych Azarenkov (to the 70th anniversary of his birth) , Ukrainian Journal of Physics: Vol. 67 No. 1 (2022)