Advertisement

Microscopic insight into low level systematics and negative-parity yrast bands in odd-mass \(\mathrm{{}^{ 111\mbox{--}127}Cd}\)

  • Preeti Verma
  • Suram SinghEmail author
  • Arun Bharti
  • S. K. Khosa
Regular Article
  • 32 Downloads

Abstract.

Aiming at investigating the nuclear structure and the evolution of the deformation in Z = 48 Cd nuclei, which have only two protons less than the Z = 50 magic Sn, we have carried out a microscopic study of negative-parity high-spin states of odd-mass 111-127 Cd nuclei using the theoretical framework of projected shell model (PSM). The results have been obtained for the deformation systematics of the first excited state \( E(15/2^-)\) , yrast energy ratios ( \( R_{2/1}\) , yrast spectra, band crossings, backbending phenomena and B(E2) transition probabilities. The present calculations have reproduced the observed nuclear-structure properties quite successfully. It turns out from the results that the gradual and weak deformation in the entire mass chain of the cadmium isotopes under study is intricately linked to the non-degenerate nature of the quasi-particle valence orbits near the Fermi level for neutrons, which hinders the onset of deformations in these isotopes at \( N\geq 60\) . These isotopes are found to have weak prolate deformation in their ground states, 117Cd being the most deformed. Some higher-spin states have also been predicted in this work for which experimental data is not available yet. B(E2) values have also been reported, for the first time, in this work and are open for their experimental verification.

References

  1. 1.
    K. Hara, Y. Sun, Int. J. Mod. Phys. E 4, 637 (1995)ADSCrossRefGoogle Scholar
  2. 2.
    M. Gorska et al., Phys. Rev. Lett. 79, 2415 (1997)ADSCrossRefGoogle Scholar
  3. 3.
    A. Jungclaus et al., Phys. Rev. Lett. 99, 132501 (2007)ADSCrossRefGoogle Scholar
  4. 4.
    D.T. Yordanov et al., Phys. Rev. Lett. 110, 192501 (2013)ADSCrossRefGoogle Scholar
  5. 5.
    J. Hakala et al., Phys. Rev. Lett. 109, 032501 (2012)ADSCrossRefGoogle Scholar
  6. 6.
    T. Kautzsch et al., Eur. Phys. J. A 9, 201 (2000)ADSCrossRefGoogle Scholar
  7. 7.
    I. Dillmann et al., Phys. Rev. Lett. 91, 162503 (2003)ADSCrossRefGoogle Scholar
  8. 8.
    A. Jungclaus, J.L. Egido, Phys. Scr. T 125, 53 (2006)ADSCrossRefGoogle Scholar
  9. 9.
    T.R. Rodriguez, J.L. Egido, A. Jungclaus, Phys. Lett. B 668, 410 (2008)ADSCrossRefGoogle Scholar
  10. 10.
    P.E. Garrett, J.L. Wood, J. Phys. G 37, 064028 (2010)ADSCrossRefGoogle Scholar
  11. 11.
    H. Schatz, A. Aprahamian, V. Barnard, L. Bildsten, A. Cumming, M. Ouellette, T. Rauscher, F.-K. Thielemann, M. Wiescher, Phys. Rev. Lett. 86, 3471 (2001)ADSCrossRefGoogle Scholar
  12. 12.
    K.-L. Kratz, J.-P. Bitouzet, F.-K. Thielemann, P. Moeller, B. Pfeiffer, Astrophys. J. 403, 216 (1993)ADSCrossRefGoogle Scholar
  13. 13.
    Y.X. Luo et al., Nucl. Phys. A 874, 32 (2012)ADSCrossRefGoogle Scholar
  14. 14.
    M. Meyer, R. Beraud, A. Charvet, R. Duait, J. Treherne, J. Genevey, Phys. Rev. C 22, 589 (1980)ADSCrossRefGoogle Scholar
  15. 15.
    D. Jerrestam et al., Nucl. Phys. A 545, 835 (1992)ADSCrossRefGoogle Scholar
  16. 16.
    P.H. Regan et al., Phys. Rev. C 49, 1885 (1994)ADSCrossRefGoogle Scholar
  17. 17.
    M. Meyer, R. Beraud, J. Dani$\mu$ere, R. Rougny, J. Rivier, J. Treherne, D. Barneoud, Phys. Rev. C 12, 1858 (1975)ADSCrossRefGoogle Scholar
  18. 18.
    N. Redon, J. Meyer, Ph. Quentin, P. Bonche, H. Flocard, P.H. Heenen, Phys. Rev. C 38, 550 (1988)ADSCrossRefGoogle Scholar
  19. 19.
    N. Redon, PhD Thesis, Lyon-1 University (1987)Google Scholar
  20. 20.
    Sadek Zeghib, Phys. Scr. 76, 336 (2007)ADSCrossRefGoogle Scholar
  21. 21.
    J.K. Hwang et al., J. Phys. G 28, L9 (2002)CrossRefGoogle Scholar
  22. 22.
    N. Buforn et al., Eur. Phys. J. A 7, 347 (2000)ADSGoogle Scholar
  23. 23.
    P. Verma, C. Sharma, S. Singh, A. Bharti, S.K. Khosa, Nucl. Phys. A 884-885, 1 (2012)ADSCrossRefGoogle Scholar
  24. 24.
    A. Gupta, P. Verma, S. Singh, A. Bharti, S.K. Khosa, G.H. Bhat, J.A. Sheikh, Nucl. Phys. A 941, 48 (2015)ADSCrossRefGoogle Scholar
  25. 25.
    A. Gupta, S. Singh, A. Bharti, S.K. Khosa, G.H. Bhat, J.A. Sheikh, Eur. Phys. J. A 53, 15 (2017)ADSCrossRefGoogle Scholar
  26. 26.
    P. Verma, C. Sharma, S. Singh, A. Bharti, S.K. Khosa, G.H. Bhat, J.A. Sheikh, Nucl. Phys. A 918, 1 (2013)ADSCrossRefGoogle Scholar
  27. 27.
    D. Singh, A. Bharti, A. Kumar, S. Singh, G.H. Bhat, J.A. Sheikh, Int. J. Mod. Phys. E 26, 1750041 (2017)ADSCrossRefGoogle Scholar
  28. 28.
    Suram Singh, Amit Kumar, Surbhi Gupta, Arun Bharti, G.H. Bhat, J.A. Sheikh, Eur. Phys. J. Plus 133, 472 (2018)CrossRefGoogle Scholar
  29. 29.
    P. Ring, P. Schuck, The Nuclear Many-Body Problem (Springer-Verlag, New York, 1980)CrossRefGoogle Scholar
  30. 30.
    J.-y. Zhang, A.J. Larabee, L.L. Reidinger, J. Phys. G 13, L75 (1987)CrossRefGoogle Scholar
  31. 31.
    Y. Sun, J.-y. Zhang, M. Guidry, J. Meng, S. Im, Phys. Rev. C 62, 021601(R) (2000)ADSCrossRefGoogle Scholar
  32. 32.
    W. Dieterich, A. Bäcklin, C.O. Lannergård, I. Ragnarsson, Nucl. Phys. A 253, 429 (1975)ADSCrossRefGoogle Scholar
  33. 33.
    M. Anguiano, J.L. Egido, L.M. Robledo, Nucl. Phys. A 696, 467 (2001)ADSCrossRefGoogle Scholar
  34. 34.
    D. Lacroix, T. Duguet, M.M. Bender, Phys. Rev. C 79, 044318 (2009)ADSCrossRefGoogle Scholar
  35. 35.
    R. Chaudhary, Rakesh K. Pandita, Rani Devi, S.K. Khosa, Nucl. Phys. A 970, 44 (2018)ADSCrossRefGoogle Scholar
  36. 36.
    R.F. Casten, Nuclear Structure from a Simple Perspective (Oxford University Press, Oxford, 1990)CrossRefGoogle Scholar
  37. 37.
    N. Fotiades et al., Phys. Rev. C 61, 064326 (2000)ADSCrossRefGoogle Scholar
  38. 38.
    J. Hwang et al., J. Phys. G 28, L9 (2002)CrossRefGoogle Scholar
  39. 39.
    J. Blachot, Nucl. Data Sheets 110, 1239 (2009)ADSCrossRefGoogle Scholar
  40. 40.
    J. Blachot, Nucl. Data Sheets 111, 1471 (2010)ADSCrossRefGoogle Scholar
  41. 41.
    J. Blachot, Nucl. Data Sheets 113, 2391 (2012)ADSCrossRefGoogle Scholar
  42. 42.
    M. Rejmund et al., Phys. Rev. C 93, 024312 (2016)ADSCrossRefGoogle Scholar
  43. 43.
    A. Hashizume, Nucl. Data Sheets 112, 1647 (2011)ADSCrossRefGoogle Scholar
  44. 44.
    S.K. Sharma, K.H. Bhatt, Phys. Lett. B 36, 550 (1971)ADSCrossRefGoogle Scholar
  45. 45.
    S.K. Sharma, K.H. Bhatt, Nucl. Phys. A 192, 625 (1972)ADSCrossRefGoogle Scholar
  46. 46.
    S.K. Khosa, S.K. Sharma, Phys. Rev. C 24, 2715 (1981)ADSCrossRefGoogle Scholar
  47. 47.
    J.H. Hamilton, A.V. Ramayya, S.J. Zhu, G.M. Ter-Akopian, Yu.Ts. Oganessian, J.D. Cole, J.O. Rasmussen, M.A. Stoyer, Prog. Part. Nucl. Phys. 35, 635 (1995)ADSCrossRefGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Physics and Astronomical SciencesCentral University of JammuSambaIndia
  2. 2.Department of PhysicsUniversity of JammuJammuIndia

Personalised recommendations