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Photoneutron Reactions on \({}^{{51}}\)V Nucleus: Systematic Uncertainties in Experiments and New Evaluated Data

Abstract

On the basis of objective physics criteria, it is shown that the cross sections determined for partial photoneutron reactions on \({}^{51}\)V nucleus by the method of photoneutron multiplicity sorting, primarily at Livermore (USA) and Saclay (France), are not reliable because of large systematic uncertainties in them. New cross sections evaluated for such reactions by the experimental–theoretical method are found to satisfy the data reliability criteria. The discrepancies between the evaluated and experimental reaction cross sections are analyzed in detail. It is found that, in the case of the \({}^{51}\)V nucleus, which is relatively light, the disregard of the contribution from the (\(\gamma\), 1\(n\)1\(p\)) reaction is the main reason of sizable systematic uncertainties in the procedure used at Livermore to identify neutrons from the (\(\gamma\), 1\(n\)), (\(\gamma\), 1\(n\)1\(p\)), and (\(\gamma\), 2\(n\)) reactions.

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REFERENCES

  1. 1

    S. S. Dietrich and B. L. Berman, At. Data Nucl. Data Tables 38, 199 (1988).

    ADS  Article  Google Scholar 

  2. 2

    A. V. Varlamov, V. V. Varlamov, D. S. Rudenko, and M. E. Stepanov, INDC(NDS)-394 (IAEA NDS, Vienna, Austria, 1999).

  3. 3a

    International Electronic Database for Nuclear Reactions: Photonuclear Experimental Data Center, Skobeltsyn Inst. of Nuclear Physics, Lomonosov Mosc. State Univ. http://cdfe.sinp.msu.ru/index.ru.html;

  4. 3b

    International Atomic Energy Agency Nuclear Data Section. http://www-nds.iaea.org/exfor;

  5. 3c

    USA National Nuclear Data Center. http://www.nndc.bnl.gov/exfor/exfor00.htm.

  6. 4

    V. V. Varlamov, N. N. Peskov, D. S. Rudenko, and M. E. Stepanov, INDC(CCP)-440 (IAEA NDS, Vienna, Austria, 2004), p. 37.

  7. 5

    V. V. Varlamov, B. S. Ishkhanov, and V. N. Orlin, Phys. At. Nucl. 75, 1339 (2012).

    Article  Google Scholar 

  8. 6

    V. V. Varlamov, B. S. Ishkhanov, V. N. Orlin, and K. A. Stopani, Eur. Phys. J. A 50, 114 (2014).

    ADS  Article  Google Scholar 

  9. 7

    V. V. Varlamov, B. S. Ishkhanov, V. N. Orlin, and S. Yu. Troshchiev, Bull. Russ. Acad. Sci.: Phys. 74, 842 (2010).

    Article  Google Scholar 

  10. 8

    V. Varlamov, A. Davydov, V. Kaidarova, and V. Orlin, Phys. Rev. C 99, 024608 (2019).

    ADS  Article  Google Scholar 

  11. 9

    V. Varlamov, A. Davydov, B. Ishkhanov, V. Kaidarova, and V. Orlin, in Proceedings of the International Conference on Nuclear Data for Science and Technology, May 19–24, 2019, Beijing, China (China Nucl. Data Center, 2019), p. 144.

  12. 10

    B. S. Ishkhanov and V. N. Orlin, Phys. Part. Nucl. 38, 232 (2007).

    Article  Google Scholar 

  13. 11

    B. S. Ishkhanov and V. N. Orlin, Phys. At. Nucl. 71, 493 (2008).

    Article  Google Scholar 

  14. 12

    B. S. Ishkhanov, V. N. Orlin, and V. V. Varlamov, EPJ Web Conf. 38, 1203 (2012).

  15. 13

    V. V. Varlamov, B. S. Ishkhanov, V. N. Orlin, N. N. Peskov, and M. E. Stepanov, Phys. At. Nucl. 76, 1403 (2013).

    Article  Google Scholar 

  16. 14

    V. V. Varlamov, M. A. Makarov, N. N. Peskov, and M. E. Stepanov, Phys. At. Nucl. 78, 634 (2015).

    Article  Google Scholar 

  17. 15

    V. V. Varlamov, M. A. Makarov, N. N. Peskov, and M. E. Stepanov, Phys. At. Nucl. 78, 746 (2015).

    Article  Google Scholar 

  18. 16

    V. V. Varlamov, A. I. Davydov, M. A. Makarov, V. N. Orlin, and N. N. Peskov, Bull. Russ. Acad. Sci.: Phys. 80, 317 (2016).

    Article  Google Scholar 

  19. 17

    V. V. Varlamov, B. S. Ishkhanov, V. N. Orlin, N. N. Peskov, and M. E. Stepanov, Phys. At. Nucl. 79, 501 (2016).

    Article  Google Scholar 

  20. 18

    B. S. Ishkhanov, V. N. Orlin, and S. Yu. Troshchiev, Phys. At. Nucl. 75, 253 (2012).

    Article  Google Scholar 

  21. 19

    S. S. Belyshev, D. M. Filipescu, I. Gheoghe, B. S. Ishkhanov, V. V. Khankin, A. S. Kurilik, A. A. Kuznetsov, V. N. Orlin, N. N. Peskov, K. A. Stopani, O. Tesileanu, and V. V. Varlamov, Eur. Phys. J. A 51, 67 (2015).

    ADS  Article  Google Scholar 

  22. 20

    V. Varlamov, B. Ishkhanov, and V. Orlin, Phys. Rev. C 96, 044606 (2017).

    ADS  Article  Google Scholar 

  23. 21

    V. V. Varlamov, A. I. Davydov, and B. S. Ishkhanov, Eur. Phys. J. A 53, 180 (2017).

    ADS  Article  Google Scholar 

  24. 22

    B. L. Berman and S. C. Fultz, Rev. Mod. Phys. 47, 713 (1975).

    ADS  Article  Google Scholar 

  25. 23

    S. C. Fultz, R. L. Bramblett, J. T. Caldwell, N. E. Hansen, and C. P. Jupiter, Phys. Rev. 128, 2345 (1962).

    ADS  Article  Google Scholar 

  26. 24

    R. A. Alvarez, B. L. Berman, D. D. Faul, F. H. Lewis, Jr., and P. Meyer, Phys. Rev. C 20, 128 (1979).

    ADS  Article  Google Scholar 

  27. 25

    A. Veyssière, H. Beil, R. Bergère, P. Carlos, A. Leprêtre, and A. de Miniac, Nucl. Phys. A 227, 513 (1974).

    ADS  Article  Google Scholar 

  28. 26

    B. I. Goryachev, B. S. Ishkhanov, I. M. Kapitonov, I. M. Piskarev, V. G. Shevchenko, and O. P. Shevchenko, Bull. Russ. Acad. Sci.: Phys. 33, 1588 (1969).

    Google Scholar 

  29. 27

    R. Bergère, H. Beil, and A. Veyssière, Nucl. Phys. A 121, 463 (1968).

    ADS  Article  Google Scholar 

  30. 28

    B. L. Berman, J. T. Caldwell, R. R. Harvey, M. A. Kelly, R. L. Bramblett, and S. C. Fultz, Phys. Rev. 162, 1098 (1967).

    ADS  Article  Google Scholar 

  31. 29

    B. L. Berman, M. A. Kelly, R. L. Bramblett, J. T. Caldwell, H. S. Davis, and S. C. Fultz, Phys. Rev. 185, 1576 (1969).

    ADS  Article  Google Scholar 

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ACKNOWLEDGMENTS

We are grateful to Professor B.S. Ishkhanov for stimulating discussions and his great help in the analysis and interpretation of the data.

Funding

This research was performed at the Department of Electromagnetic Processes and Interactions of Atomic Nuclei at Skobeltsyn Institute of Nuclear Physics, Moscow State University.

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Correspondence to V. V. Varlamov.

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Varlamov, V.V., Davydov, A.I. & Orlin, V.N. Photoneutron Reactions on \({}^{{51}}\)V Nucleus: Systematic Uncertainties in Experiments and New Evaluated Data. Phys. Atom. Nuclei 84, 389–400 (2021). https://doi.org/10.1134/S1063778821030157

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