On the Mechanism of Photoneutron Reactions at Light Tellurium Isotopes in the 10–18 MeV Interval

Authors

  • V.M. Mazur Institute of Electron Physics, Nat. Acad. of Sci. of Ukraine
  • Z.M. Bigan Institute of Electron Physics, Nat. Acad. of Sci. of Ukraine
  • P.S. Derechkey Institute of Electron Physics, Nat. Acad. of Sci. of Ukraine
  • O.M. Pop Institute of Electron Physics, Nat. Acad. of Sci. of Ukraine

DOI:

https://doi.org/10.15407/ujpe66.4.275

Keywords:

giant dipole resonance, atomic nucleus, nuclear reactions, cross-section, bremsstrahlung gamma spectrum, isomeric ratio

Abstract

The yield of the 122Te(y, n)121Te reaction is measured, and its cross-section is calculated in a gamma-ray energy interval of 10–18 MeV. The obtained cross-section is compared with the cross-section of the reaction 120Te(y, n)119Te. The experimental results are compared with those of theoretical calculations performed with the use of the software package TALYS-1.9. The statistical mechanism dominant in (y, n) reactions at the studied nuclei is found.

References

G.M. Gurevich, L.E. Lazareva, V.M. Mazur, S.YU. Merkulov, G.V. Solodukhov, V.A. Tyutin. Total nuclear photoabsorption cross-section in the region 150 < A < 190. Nucl. Phys. A 351, 265 (1981).

https://doi.org/10.1016/0375-9474(81)90443-7

G.M. Gurevich, L.E. Lazareva, V.M. Mazur, S.YU. Merkulov, G.V. Solodukhov, V.A. Tyutin. On the width of E1 giant resonance of deformed nuclei in the 150 < A < 286 region. Pis'ma Zh. Eksp. Teor. Fiz. 28, 168 (1978) (in Russian).

A.V. Varlamov, V.V. Varlamov, D.S. Rudenko, M.E. Stepanov. Atlas of Giant Dipole Resonances. IAEA, INDS, (NDS)-394 (Vienna, Austria, 1999).

V.M. Mazur. Excitation of isomeric states of nuclei in photoneutron reactions in the region of giant dipole resonance. Fiz. Elem. Chast. At. Yadra 31, 386.(2000) (in Russian).

H.R. Weller, M.W. Ahmed et al. Research opportunities at the upgraded HIyS facility Progr. Part. Nucl. Phys. 62,

(2009).

K. Horikawa, S. Miyamoto, S. Amano, T. Mochizuki. Measurements for the energy and fl ux of laser Compton scattering y-ray photons generated in an electron storage ring: NewSUBARU. Nucl. Instr. Meth. A 618, 209 (2010).

https://doi.org/10.1016/j.nima.2010.02.259

C. Nair, F.R. Junghans, M. Erhard et al. Dipole strength in 144Sm studied via (y ,n), (y ,p) and (y ,a) reactions. Phys. Rev. C 81, 055806 (2010).

https://doi.org/10.1103/PhysRevC.81.055806

E.M. Burbige, G.R. Burbige, W.A. Fowler, F. Hoyle. Synthesis of the elements in stars. Rev. Mod. Phys. 29, 547 (1957).

https://doi.org/10.1103/RevModPhys.29.547

R.D.L. Lambert. The p-nuclei: abundances and origins. Astron. Astrophys. Rev. 3, 201 (1992).

https://doi.org/10.1007/BF00872527

M. Arnould, S. Goriely The p-process of stellar nucleosynthesis: Astrophysics and nuclear physics states. Phys. Rep. 384, 1 (2003).

https://doi.org/10.1016/S0370-1573(03)00242-4

V.M. Mazur, Z.M. Bigan, P.S. Derechkey, V.A. Zheltonozhskyi, A.M. Savrasov. Investigation of cross-sections of

(y ,n) reactions at p-nuclei in the region of giant E1-resonance energies. Yad. Fiz. Energet. 20, 228 (2019) (in Ukrainian).

A. Lepretre, H. Beil, R. Bergere P. Carlos, J. Fagot, A. De Miniac, A. Veyssiere. A study of the Giant Dipole

Resonance in doubly even tellurium and cerium isotopes. Nucl. Phys. A 258, 350 (1976).

https://doi.org/10.1016/0375-9474(76)90011-7

S.P. Kapica, V.N. Melekhin. The Microtron (Harwood Academic, 1978).

R.B. Firestone. Table of Isotopes, 8th edition (J. Wiley and Sons, 1996).

D. Symochko, E. Browne, J.K. Tuli. Adopted levels gammas for A = 119. Nucl. Data Sheets 110, 2945 (2009).

https://doi.org/10.1016/j.nds.2009.10.003

S. Ohya. Adopted levels gammas for A = 123. Nucl. Data Sheets 102, 547 (2004).

https://doi.org/10.1016/j.nds.2004.09.001

Y. Tendow. Adopted levels gammas for A = 129. Nucl. Data Sheets 77, 631 (1996).

https://doi.org/10.1006/ndsh.1996.0007

V.M. Mazur, D.M. Symochko, Z.M. Bigan, T.V. Poltorzhytska. Excitation of the 119Tem, 121Tem, 123Tem, 127Tem and 129Tem isomer in (y ,n) reaction from 10 to 22 MeV. Phys. Rev. C 87, 044604 (2013).

https://doi.org/10.1103/PhysRevC.87.044604

O.V. Bogdankevich, F.A. Nikolaev. Methods in Bremsstrahlung Research (Academic Press, 1966).

A.J. Koning, S. Hilaire, M.C. Duijvestijn. TALYS-1.0: Comprehensive nuclear reaction modelling. In: Proceedings

of the International Conference on Nuclear Data for Science and Technology - ND2007, April 22-27, 2007, Nice, France (2007), p. 211.

W. Hauser, H. Feshbach. The inelastic scattering of neutrons. Phys. Rev. 87, 336 (1952).

https://doi.org/10.1103/PhysRev.87.366

P. Capote, M. Heman, P. Obloszinsky et al. RIPL - Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations. Nucl. Data Sheets 110, 3107 (2009).

https://doi.org/10.1016/j.nds.2009.10.004

W. Dilg, W. Schantl, H. Vonach, M. Uhl. Level density parameters for the back-shifted fermi gas model in the mass range 40 < A < 250. Nucl Phys. A 217, 269 (1973).

https://doi.org/10.1016/0375-9474(73)90196-6

A. Gilbert, A.G.W. Cameron. A composite nuclear-level density formula with shell corrections. Can. J. Phys. 43, 1446 (1965).

https://doi.org/10.1139/p65-139

Published

2021-05-13

How to Cite

Mazur, V., Bigan, Z., Derechkey, P., & Pop, O. (2021). On the Mechanism of Photoneutron Reactions at Light Tellurium Isotopes in the 10–18 MeV Interval. Ukrainian Journal of Physics, 66(4), 275. https://doi.org/10.15407/ujpe66.4.275

Issue

Section

Fields and elementary particles

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