EVOLUTION OF NEUTRON SHELL STRUCTURE OF N = 14, 16 ISOTONES

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

The evolution of the single-particle characteristics of neutron and proton-excess isotones with the new magic numbers N = 14, 16 in the Z range from 8 to 20 in the dispersive optical model was traced. The calculated energy gaps N = 14 and 16 widened with the increase in excess of protons and neutrons respectively. At the same time, the deviation of half-sum of the single-particle energies of the last predominantly occupied and the first predominantly unoccupied states from the Fermi energy decreased. The widening of the gaps enhanced under the assumption of an increase in the diffuseness of the Hartree–Fock component of the dispersive optical model potential with an increase in the neutron excess over the range of Z numbers considered. The bubble structure manifests clearly in the neutron density distribution of the proton-unstable nucleus 34Са.

About the authors

O. V. Bespalova

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Email: besp@sinp.msu.ru
Moscow, Russia

A. A. Klimochkina

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics; Lomonosov Moscow State University, Faculty of Physics

Moscow, Russia; Moscow, Russia

M. M. Mosunov

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics; Lomonosov Moscow State University, Faculty of Physics

Moscow, Russia; Moscow, Russia

References

  1. M. Goeppert-Mayer, Phys. Rev. 75, 1969 (1949); doi: 10.1103/PhysRev.75.1969
  2. O. Haxel, J. H. D. Jensen, and H. E. Suess, Phys. Rev. 75, 1766 (1949); doi: 10.1103/PhysRev.75.1766.2
  3. C. Mahaux and R. Sartor, Adv. Nucl. Phys. 20, 1 (1991); doi: 10.1007/978-1-4613-9910-0_1
  4. О. В. Беспалова, Е. А. Романовский, Т. И. Спасская, ЯФ 78, 123 (2015) [Phys. At. Nucl. 78, 118 (2015)]; doi: 10.7868/S0044002714120046
  5. C. R. Hoffman, T. Baumann, D. Bazin, J. Brown, G. Christian, P. A. DeYoung, J. E. Finck, N. Frank, J. Hinnefeld, R. Howes, P. Mears, E. Mosby, S. Mosby, J. Reith, B. Rizzo, W. F. Rogers, et al., Phys. Rev. Lett. 100, 152502 (2008); doi: 10.1103/PhysRevLett.100.152502
  6. C. R. Hoffman, T. Baumann, D. Bazin, J. Brown, G. Christian, D. H. Denby, P. A. DeYoung, J. E. Finck, N. Frank, J. Hinnefeld, S. Mosby, W. A. Peters, W. F. Rogers, A. Schiller, A. Spyrou, M. J. Scott, et al., Phys. Lett. B 672, 17 (2009); doi: 10.1016/j.physletb.2008.12.066
  7. L. Lalanne, O. Sorlin, A. Poves, M. Assi´e, F. Hammache, S. Koyama, D. Suzuki, F. Flavigny, V. GirardAlcindor, A. Lemasson, A. Matta, T. Roger, D. Beaumel, Y. Blumenfeld, B. A. Brown, F. De Oliveira Santos, et al., Phys. Rev. Lett. 131, 092501 (2023); doi: 10.1103/PhysRevLett.131.092501
  8. O. B. Tarasov, D. S. Ahn, D. Bazin, N. Fukuda, A. Gade, M. Hausmann, N. Inabe, S. Ishikawa, N. Iwasa, K. Kawata, T. Komatsubara, T. Kubo, K. Kusaka, D. J. Morrissey, M. Ohtake, H. Otsu, et al., Phys. Rev. Lett. 121, 022501 (2018); doi: 10.1103/PhysRevLett.121.022501
  9. L. Lalanne, O. Sorlin, A. Poves, M. Assi´e, F. Hammache, S. Koyama, D. Suzuki, F. Flavigny, V. GirardAlcindor, A. Lemasson, A. Matta, T. Roger, D. Beaumel, Y. Blumenfeld, B. A. Brown, F. De Oliveira Santos, et al., Phys. Rev. Lett. 129, 122501 (2022); doi: 10.1103/PhysRevLett.129.122501
  10. N. Dronchi, D. Weisshaar, B. A. Brown, A. Gade, R. J. Charity, L. G. Sobotka, K. W. Brown, W. Reviol, D. Bazin, P. J. Farris, A. M. Hill, J. Li, B. Longfellow, D. Rhodes, S. N. Paneru, S. A. Gillespie, et al., Phys. Rev. C 107, 034306 (2023); doi: 10.1103/PhysRevC.107.034306
  11. A. J. Miller, K. Minamisono, A. Klose, D. Garand, C. Kujawa, J. D. Lantis, Y. Liu, B. Maa., P. F. Mantica, W. Nazarewicz, W. N¨ortersh¨auser, S. V. Pineda, P.-G. Reinhard, D. M. Rossi, F. Sommer, C. Sumithrarachchi, et al., Nat. Phys. 15, 432 (2019); doi: 10.1038/s41567-019-0416-9
  12. J. M. Mueller, R. J. Charity, R. Shane, L. G. Sobotka, S. J. Waldecker, W. H. Dickhoff, A. S. Crowell, J. H. Esterline, B. Fallin, C. R. Howell, C. Westerfeldt, M. Youngs, B. J. Crowe III, and R. S. Pedroni, Phys. Rev. C 83, 064605 (2011); doi: 10.1103/PhysRevC.83.064605
  13. J. M. VanderKam, G. J. Weisel, and W. Tornow, J. Phys. G: Nucl. Part. Phys. 26, 1787 (2000); doi: 10.1088/0954-3899/26/12/303
  14. M. Jaminon and C. Mahaux, Nucl. Phys. A 440, 228 (1985); doi: 10.1016/0375-9474(85)90339-2
  15. A. J. Koning and J. P. Delaroche, Nucl. Phys. A 713, 231 (2003); doi: 10.1016/S0375-9474(02)01321-0
  16. C. D. Pruitt, J. E. Escher, and R. Rahman, Phys. Rev. C 107, 014602 (2023); doi: 10.1103/PhysRevC.107.014602
  17. N. Wang, M. Liu, X. Wu, and J. Meng, Phys. Lett. B 734, 215 (2014); doi: 10.1016/j.physletb.2014.05.049
  18. M. J. Strongman, A. Spyrou, C. R. Hoffman, T. Baumann, D. Bazin, J. Brown, P. A. DeYoung, J. E. Finck, N. Frank, S. Mosby, W. F. Rogers, G. F. Peaslee, W. A. Peters, A. Schiller, S. L. Tabor, and M. Thoennessen, Phys. Rev. C 80, 021302(R) (2009); doi: 10.1103/PhysRevC.80.021302
  19. Wei-Qiang Ma and Yi-Bin Qian, Chin. Phys. C 46, 014106 (2022); doi: 10.1088/1674-1137/ac3072
  20. О. В. Беспалова, А. А. Климочкина, ЯФ 87, 100 (2024) [Phys. At. Nucl. 87, 105 (2024)]; doi: 10.31857/S0044002724020065
  21. O. V. Bespalova, N. A. Fedorov, A. A. Klimochkina, M. L. Markova,T. I. Spasskaya, and T.Yu. Tretyakova, Eur. Phys. J. A 54, 2 (2018); doi: 10.1140/epja/i201812449-x
  22. J. J. Li, W. H. Long, J. L. Song, and Q. Zhao, Phys. Rev. C 93, 054312 (2016); doi: 10.1103/PhysRevC.93.054312
  23. J. Bonnard, S. M. Lenzi, and A. P. Zuker, Phys. Rev. Lett. 116, 212501 (2016); doi: 10.1103/PhysRevLett.116.212501

Supplementary files

Supplementary Files
Action
1. JATS XML
Download

Copyright (c) 2025 Russian Academy of Sciences

Согласие на обработку персональных данных

 

Используя сайт https://journals.rcsi.science, я (далее – «Пользователь» или «Субъект персональных данных») даю согласие на обработку персональных данных на этом сайте (текст Согласия) и на обработку персональных данных с помощью сервиса «Яндекс.Метрика» (текст Согласия).