Nuclear Physics and Atomic Energy

Ядерна фізика та енергетика
Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English, Russian
  Periodicity: 4 times per year

  Open access peer reviewed journal

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Nucl. Phys. At. Energy 2017, volume 18, issue 2, pages 146-150.
Section: Nuclear Physics.
Received: 24.04.2017; Accepted: 15.06.2017; Published online: 22.11.2017.
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Study of the excitation of 11/2 isomeric state of the nucleus 139Се in reaction (γ, n)m in the giant E1-resonance region

V. M. Mazur, Z. M. Bigan, P. S. Derechkey*

Institute of Electron Physics, National Academy of Sciences of Ukraine, Uzhhorod, Ukraine

*Corresponding author. E-mail address:

Abstract: The isomeric yield ratio Ym/Yg is measured in 140Се(γ, n)139m,gСе reaction in 11 - 18 MeV energy range with the step of 0.5 MeV. Using inverse matrix method the experimental cross section of 140Се(γ, n)139m,gСе reaction is estimated. Obtained excitation cross section of the isomeric state of the nucleus 139Се is comparable with the results of the theoretical calculations performed with the TALYS-1.6 program suite.

Keywords: isomeric ratio, cross section, giant dipole resonance, bremsstrahlung, gamma-spectra.


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