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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https://doi.org/

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: derecskei89@gmail.com

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.

References:

1. V.M. Mazur. Excitation of the nuclear isomeric states in photonuclear reactions in the giant dipole resonance range. Phys. Part. Nucl. 31 (2000) 386. (Rus) http://www1.jinr.ru/Archive/Pepan/v-31-2/v-31-2-4.pdf

2. Yu.P. Gangrskiy, V.M. Mazur. The scattering of γ-quanta by nuclei and excitation isomer states. Phys. Part. Nucl. 33 (2002) 158. (Rus) http://www1.jinr.ru/Archive/Pepan/v-33-1/v-33-1-4.pdf

3. V.M. Mazur, V.A. Zheltonozsky, Z.M. Bigan. Investigation of isomer states excitation in (γ, n) reactions on nuclei shell near N = 82. Phys. At. Nucl. 58 (1995) 970. (Rus)

4. V.M. Mazur, Z.M. Bigan, D.M. Symochko. Population of metastable states in Rb isotopes in the photoneutron reactions. Journal of Physics G: Nuclear and Particle Physics 37 (2010) 035101. https://doi.org/10.1088/0954-3899/37/3/035101

5. V.M. Mazur et al. Excitation of the 119Tem, 121Tem, 123Tem, 127Tem and 129Tem isomers in (γ, n) reactions from 10 to 22 MeV. Phys. Rev. C 87 (2013) 044604. https://doi.org/10.1103/PhysRevC.87.044604

6. R.B. Firestone, V.S. Shirley (eds.). Table of Isotopes. 8-th. ed. (New York: J. Wiley and Sons, 1996). Book

7. R. Vanska, R. Rieppo. The experimental isomeric cross-section ratio in the nuclear activation technique. Nucl. Instr. and Meth. 179 (1981) 525. https://doi.org/10.1016/0029-554X(81)90178-6

8. A.V. Varlamov et al. Atlas of Giant Dipole Resonances. INDS(NDS)-394 (Austria, Vienna: IAEA, 1999). http://cdfe.sinp.msu.ru/publications/atlas.pdf

9. O.V. Bogdankevich, F.A. Nikolaev. Methods in Bremsstrahlung Research (New York: Academic Press, 1966). Google Books

10. A.J. Koning, S. Hilarie, M.C. Duijvestijn. TALYS-1.0. Proc. Conf. Nucl. Data for Science and Technology ND-2007 (France, 22 - 27 May, 2007), p. 211. https://doi.org/10.1051/ndata:07767

11. W. Hauser, H. Feshbach. The inelastic scattering of neutrons. Phys. Rev. 87 (1952) 366. https://doi.org/10.1103/PhysRev.87.366

12. W. Dilg et al. Level density parameters for the bask-shifted Fermi gas model in the mass range 40 < A > 250. Nucl. Phys. A 217 (1973) 269. https://doi.org/10.1016/0375-9474(73)90196-6

13. A.J. Koning, J.P. Delaroche. Local and global nucleon optical models from 1 keV to 200 MeV. Nucl. Phys. A 713 (2003) 231. https://doi.org/10.1016/S0375-9474(02)01321-0

14. W. Burrows. Nuclear Data Sheets for A = 139. Nucl. Data Sheets 92 (2001) 623. https://doi.org/10.1006/ndsh.2001.0008