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Thresholds for the Break of Nucleon Cooper Pairs and Special Features of the Decay of the 172Yb Nucleus in the Reaction 171Yb(nth,2γ)

Abstract

The reaction 171Yb(nth,2γ) was studied with the aim of extending the experimental database of intensities of cascades of two photons emitted sequentially after radiative thermal-neutron capture. An analysis of these cascade intensities permitted revealing the change in the structure of observed levels of the 172Yb nucleus versus the excitation energy and determining probable thresholds for the break of four Cooper pairs of neutrons below the neutron binding energy.

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References

  1. S. T. Boneva, E. V. Vasil’eva, Yu. P. Popov, A.M. Sukhovoĭ, and V. A. Khitrov, Sov. J. Part. Nucl. 22, 232 (1991).

    Google Scholar 

  2. L. A. Malov and V. G. Solov’ev, Sov. J. Nucl. Phys. 26, 384 (1977).

    Google Scholar 

  3. V. G. Soloviev, Theory of Atomic Nuclei: Quasi-Particles and Phonons (IPP, Bristol, 1992).

    Google Scholar 

  4. V.G. Solov’ev, Sov. J. Phys.Part. Nucl. 3, 390 (1972).

    Google Scholar 

  5. C. E. Porter and R. G. Thomas, Phys. Rev. 104, 483 (1956).

    ADS  Article  Google Scholar 

  6. A. M. Sukhovoj, Phys. At. Nucl. 78, 230 (2015).

    Article  Google Scholar 

  7. A. M. Sukhovoj and L. V. Mitsyna, in Proceedings of the 22nd International Seminar on Interaction of Neutrons with Nuclei, Dubna, May 2014, JINR Preprint No. E3-2015-13 (JINR, Dubna, 2015), p. 245; https://doi.org/isinn.jinr.ru/past-isinns.html.

    Google Scholar 

  8. A. M. Sukhovoj, L. V. Mitsyna, and N. Jovancevic, Phys. At. Nucl. 79, 313 (2016).

    Article  Google Scholar 

  9. D. C. Vu, A. M. Sukhovoj, L. V. Mitsyna, Sh. Zeinalov, N. Jovancevic, D. Knezevic, M. Krmar, and A. Dragic, Phys. At. Nucl. 80, 237 (2017).

    Article  Google Scholar 

  10. D. C. Vu, A. M. Sukhovoj, L. V. Mitsyna, Sh. Zeinalov, N. Jovancevic, D. Knezevic, M. Krmar, and A. Dragic, JINR Preprint No. E3-2016-43 (JINR, Dubna, 2016).

    Google Scholar 

  11. A. M. Sukhovoj and V. A. Khitrov, Instrum. Exp. Tech. 27, 1071 (1984).

    Google Scholar 

  12. Yu. P. Popov, A. M. Sukhovoĭ, V. A. Khitrov, Yu. S. Yazvitskii, Bull. Acad. Sci. USSR, Ser. Phys. 48, 1830 (1984).

    Google Scholar 

  13. https://doi.org/www-nds.iaea.org/ENDSF.

  14. S. T. Boneva, V. A. Khitrov, A. M. Sukhovoj, and A. V. Vojnov, Nucl. Phys. 589, 293 (1995).

    Article  Google Scholar 

  15. R. C. Greenwood, C.W. Reich, and S. H. Vegors, Jr., Nucl. Phys. A 252, 260 (1975).

    ADS  Article  Google Scholar 

  16. A. V. Ignatyuk, IAEA Report INDC-233(L) (IAEA, Vienna, 1985).

    Google Scholar 

  17. W. Dilg, W. Schantl, H. Vonach, and M. Uhl, Nucl. Phys. A 217, 269 (1973).

    ADS  Article  Google Scholar 

  18. S.G. Kadmensky, V.P. Markushev, and V. I. Furman, Sov. J. Nucl. Phys. 37, 165 (1983).

    Google Scholar 

  19. Reference Input Parameter Library RIPL-2, Hand book for Calculations of Nuclear Reaction Data, IAEA-TECDOC (IAEA, 2002).

  20. V. M. Strutinsky, in Proceedings of the International Congress on Nuclear Physics, Paris, France, 1958, p. 617.

    Google Scholar 

  21. A. M. Sukhovoj, W. I. Furman, and V. A. Khitrov, Phys. At. Nucl. 71, 982 (2008).

    Article  Google Scholar 

  22. V. G. Pronyaev, G. V. Kotel’nikova, G. N. Lovchikova, and O. A. Sal’nikov, Sov. J. Nucl. Phys. 30, 310 (1979).

    Google Scholar 

  23. A. M. Sukhovoj and V. A. Khitrov, Phys. At. Nucl. 73, 1635 (2010).

    Article  Google Scholar 

  24. D. Bohle, A. Richter, W. Steffen, A. E. L. Dieperink, N. Lo Iudice, F. Palumbo, and O. Scholten, Phys. Lett. B 137, 27 (1984).

    ADS  Article  Google Scholar 

  25. N. Jovancevic, A. M. Sukhovoj, W. I. Furman, and V. A. Khitrov, in Proceedings of the 20th International Seminar on Interaction of Neutrons with Nuclei, Dubna, May 2012, JINR Preprint No. E3-2013-22 (JINR, Dubna, 2013), p. 157. https://doi.org/isinn.jinr.ru/past-isinns.html.

    Google Scholar 

  26. S. F. Mughabhab, Neutron Cross Sections (Academic, New York, 1984), BNL-325, Vol. 1, Part B.

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Correspondence to N. A. Nguyen.

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Original Russian Text © N.A. Nguyen, X.H. Nguyen, D.K. Pham, D.C. Vu, A.M. Sukhovoj, L.V. Mitsyna, 2018, published in Yadernaya Fizika, 2018, Vol. 81, No. 3, pp. 279–289.

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Nguyen, N.A., Nguyen, X.H., Pham, D.K. et al. Thresholds for the Break of Nucleon Cooper Pairs and Special Features of the Decay of the 172Yb Nucleus in the Reaction 171Yb(nth,2γ). Phys. Atom. Nuclei 81, 296–306 (2018). https://doi.org/10.1134/S1063778818030183

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