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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V. M. Mazur¹, Z. M. Bigan¹, P. S. Derechkey¹, V. A. Zheltonozhsky², A. M. Savrasov<sup>2,*

1</sup> Institute of Electronic Physics, National Academy of Sciences of Ukraine, Uzhhorod, Ukraine
²Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

^*Corresponding author. E-mail address: asavrasov@kinr.kiev.ua

Abstract: Cross-sections of photonuclear reactions ¹²⁰Te(γ,n)¹¹⁹Те, ¹³⁶Се(γ,n)¹³⁵Ce in the energy region of gamma quanta 9 - 18 MeV were studied. The measurements were carried out by activation technique. Experimental results were compared with the theoretical calculations carried out within the framework of the software package TALYS-1.9.

Keywords: ¹²⁰Те, ¹³⁶Се, nuclear reactions, cross-section of photonuclear reactions, giant dipole resonance, bremsstrahlung gamma-rays, isomeric states.

1. M. Arnould, S. Goriely. The p-process of stellar nucleosynthesis: Astrophysics and nuclear physics states. Phys. Rep. 384 (2003) 1. https://doi.org/10.1016/S0370-1573(03)00242-4

2. R.D.L. Lambert. The p-nuclei: abundances and origins. Astron. Astrophys. Rev. 3 (1992) 201. https://doi.org/10.1007/BF00872527

3. C. Nair et al. Dipole strength in ¹⁴⁴Sm studied via (γ,n), (γ,p) and (γ,α) reactions. Phys. Rev. C 81 (2010) 055806. https://doi.org/10.1103/PhysRevC.81.055806

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

5. G.M. Gurevich et al. Giant resonance in the total photoabsorption cross-section of Z ≈ 90 nuclei. Nucl. Phys. A 273 (1976) 326. https://doi.org/10.1016/0375-9474(76)90594-7

6. G.M. Gurevich, L.E. Lasareva, V.M. Mazur. Total nuclear photoabsorption cross-section in the region 150 < A < 190. Nucl. Phys. A 351 (1981) 257. https://doi.org/10.1016/0375-9474(81)90443-7

7. A.V. Varlamov et al. Atlas of Giant Dipole Resonances (Vienna: IAEA, INDS, (NDS), 1999) 394 p. https://inis.iaea.org/search/search.aspx?orig_q=RN:30003843

8. H.R. Weller, M.W. Ahmed. The HIγS Facility: A Free-Electron Laser Generated Gamma-Ray Beam for Research in Nuclear Physics. Modern Phys. Lett. A 23 (2003) 1569. https://doi.org/10.1142/S0217732303011216

9. K. Horikawa. Measurement for the energy and flux of laser Compton scattering γ-ray photons generated in an electron storage. Nucl. Instr. Meth. A 618 (2010) 525. https://doi.org/10.1016/j.nima.2010.02.259

10. H. Utsunomiy et al. Photoneutron cross sections for Ni isotopes. Toward understanding (n,γ) cross sections relevant to weak s-process nucleosynthesis. Phys. Rev. C 98 (2018) 054619. https://doi.org/10.1103/PhysRevC.98.054619

11. A. Lepretre et al. A study of the Giant Dipole Resonance in doubly even tellurium and cerium isotopes. Nucl. Phys. A 258 (1976) 350. https://doi.org/10.1016/0375-9474(76)90011-7

12. S.P. Kapica, V.N. Melekhin. The Microtron (London: Harwood Academic, 1978) 204 p. Google Books

13. R.B. Firestone, V.S. Shirley, C.M. Baglin. Table of isotopes CD-ROM. 8-th ed. (1996). ToI'1996

14. V.M. Mazur et al. Excitation of the ¹¹⁹Te^m, ¹²¹Te^m, ¹²³Te^m, ¹²⁷Te^m and ¹³⁰Te^m isomers in (γ, n) reaction from 10 to 22 MeV. Phys. Rev. C 87 (2013) 046044. https://doi.org/10.1103/PhysRevC.87.044604

15. O.V. Bogdankevich, F.A. Nikolaev. Methods in Bremstrahlung Research (New York: Academic Press, 1966) 217 p.

16. P. Carlos et al. The giant dipole resonance in transition region for the neodymium isotopes. Nucl. Phys. A 172 (1971) 437. https://doi.org/10.1016/0375-9474(71)90725-1

17. A.J. Koning, S. Hilaire, M.C. Duijvestijn. TALYS: Comprehensive nuclear reaction modelling. In: Proc. of the Intern. Conf. on Nucl. Data for Sci. and Tec. "ND2007", Nice, France, April 22 - 27, 2007 (Nice, 2007) p. 211. https://doi.org/10.1051/ndata:07767

18. C.T. Angell et al. Evidence for radiative coupling of the pygmy dipole resonance to excited states. Phys. Rev. C 86 (2012) 051302(R). https://doi.org/10.1103/PhysRevC.86.051302

19. 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

20. W. Dilg et al. Level density parameters for back-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

21. B. Singh et al. Adopted Levels, Gammas for ¹³⁵Ce. Nucl. Data Sheets 109 (2008) 517. https://doi.org/10.1016/j.nds.2008.02.001

22. D. Symochko, E. Browne, J.K. Tuli. Adopted levels gammas for ¹¹⁹Te. Nucl. Data Sheets 110 (2009) 2945. https://doi.org/10.1016/j.nds.2009.10.003