New levels and reinvestigation of octupole correlations in 146,147La

  • E. H. Wang
  • W. Lewis
  • C. J. Zachary
  • J. H. Hamilton
  • A. V. Ramayya
  • J. K. Hwang
  • S. H. Liu
  • N. T. Brewer
  • Y. X. Luo
  • J. O. Rasmussen
  • S. J. Zhu
  • G. M. Ter-Akopian
  • Yu. Ts. Oganessian
Regular Article - Experimental Physics
  • 38 Downloads

Abstract.

High spin states of neutron-rich 146,147La have been reinvestigated by \(\gamma\)-\(\gamma\)-\( \gamma\) and \(\gamma\)-\(\gamma\)-\(\gamma\)-\(\gamma\) coincidence data from a 252Cf spontaneous fission experiment by using Gammasphere. Thirty-two new transitions in 146La are observed. Two new bands in 146La have been established. One of them is proposed to be the octupole parity partner of the previously known band. Twenty new transitions in 147La are observed. The ground state band of 147La has been established with a proposed \( 5/2^+\) band-head. Angular correlation of cascades has been used to study the spins and parities of the states. The B(E1)/B(E2) ratios and dipole moments of bands in 146, 147La have been measured.

References

  1. 1.
    W. Nazarewicz et al., Nucl. Phys. A 429, 269 (1984)ADSCrossRefGoogle Scholar
  2. 2.
    G.A. Leander et al., Phys. Lett. B 152, 284 (1985)ADSCrossRefGoogle Scholar
  3. 3.
    W.R. Phillips et al., Phys. Rev. Lett. 57, 3257 (1986)ADSCrossRefGoogle Scholar
  4. 4.
    W.R. Phillips et al., Phys. Lett. B 212, 402 (1988)ADSCrossRefGoogle Scholar
  5. 5.
    S.J. Zhu et al., Phys. Lett. B 357, 273 (1995)ADSCrossRefGoogle Scholar
  6. 6.
    J.H. Hamilton et al., Prog. Part. Nucl. Phys. 35, 635 (1995)ADSCrossRefGoogle Scholar
  7. 7.
    S.J. Zhu et al., J. Phys. G 23, L77 (1997)Google Scholar
  8. 8.
    S.J. Zhu et al., Phys. Rev. C 60, 051304 (1999)ADSCrossRefGoogle Scholar
  9. 9.
    W. Urban et al., Nucl. Phys. A 613, 107 (1997)ADSCrossRefGoogle Scholar
  10. 10.
    M.A. Jones et al., Nucl. Phys. A 605, 133 (1996)ADSCrossRefGoogle Scholar
  11. 11.
    H.J. Li et al., Phys. Rev. C 90, 047303 (2014)ADSCrossRefGoogle Scholar
  12. 12.
    Y.J. Chen et al., Phys. Rev. C 73, 054316 (2006)ADSCrossRefGoogle Scholar
  13. 13.
    S.J. Zhu et al., Phys. Rev. C 85, 014330 (2012)ADSCrossRefGoogle Scholar
  14. 14.
    P.F. Mantica, J.D. Robertson, E.M. Baum, W.B. Walters, Phys. Rev. C 48, 1579 (1993)ADSCrossRefGoogle Scholar
  15. 15.
    R.G. Clark, in Proceeding of the Third IAEA Symposium on the Physics and Chemistry of Fission, Rochester, 1973, Vol. 2 (International Atomic Energy Agency, Vienna, 1974) p. 221Google Scholar
  16. 16.
    T. Rzaca-Urban et al., Phys. Rev. C 82, 067304 (2010)ADSCrossRefGoogle Scholar
  17. 17.
    G. Thiamova, P. Alexa, Z. Hons, G.S. Simpson, Phys. Rev. C 86, 044334 (2012)ADSCrossRefGoogle Scholar
  18. 18.
    W. Urban et al., Phys. Rev. C 54, 945 (1996)ADSCrossRefGoogle Scholar
  19. 19.
    S.J. Zhu et al., Phys. Rev. C 59, 1316 (1999)ADSCrossRefGoogle Scholar
  20. 20.
    J.G. Wang et al., Phys. Rev. C 75, 064301 (2007)ADSCrossRefGoogle Scholar
  21. 21.
    Y.X. Luo et al., Nucl. Phys. A 818, 121 (2009)ADSCrossRefGoogle Scholar
  22. 22.
    Scott H. Faller et al., Phys. Rev. C 38, 307 (1988)ADSCrossRefGoogle Scholar
  23. 23.
    C. Chung et al., Phys. Rev. C 26, 1198 (1982)ADSCrossRefGoogle Scholar
  24. 24.
    C. Chuang et al., Phys. Rev. C 29, 592 (1984)ADSCrossRefGoogle Scholar
  25. 25.
    C. Chung et al., Phys. Rev. C 31, 2199 (1985)ADSCrossRefGoogle Scholar
  26. 26.
    L.K. Peker, J.K. Tuli, Nucl. Data Sheets 82, 187 (1997)ADSCrossRefGoogle Scholar
  27. 27.
    T.A. Khan, D. Hofmann, F. Horsch, Nucl. Phys. A 205, 488 (1973)ADSCrossRefGoogle Scholar
  28. 28.
    J.K. Hwang et al., Phys. Rev. C 58, 3252 (1998)ADSCrossRefGoogle Scholar
  29. 29.
    E. Der Mateosian, L.K. Peker, Nucl. Data Sheets 66, 705 (1992)ADSCrossRefGoogle Scholar
  30. 30.
    N. Nica, Nucl. Data Sheets 110, 749 (2009)ADSCrossRefGoogle Scholar
  31. 31.
    D.C. Radford, Nucl. Instrum. Methods Phys. Res. A 361, 297 (1995)ADSCrossRefGoogle Scholar
  32. 32.
    E.H. Wang et al., Phys. Rev. C 92, 034317 (2015)ADSCrossRefGoogle Scholar
  33. 33.
    B. Bucher et al., Aps Bull. 60, DC00009 (2015)Google Scholar
  34. 34.
    A.V. Daniel et al., Nucl. Instrum. Methods B 262, 399 (2007)ADSCrossRefGoogle Scholar
  35. 35.
    T. Rzaca-Urban et al., Phys. Rev. C 87, 031305(R) (2013)ADSCrossRefGoogle Scholar
  36. 36.
    C. Goodin et al., Phys. Rev. C 79, 034316 (2009)ADSCrossRefGoogle Scholar
  37. 37.
    S.H. Liu, et al., Phys. Rev. C 81, 014316 (2010)ADSCrossRefGoogle Scholar
  38. 38.
    T. Rzaca-Urban et al., Phys. Rev. C 80, 064317 (2009)ADSCrossRefGoogle Scholar
  39. 39.
    Y.X. Luo et al., Nucl. Phys. A 838, 1 (2010)ADSCrossRefGoogle Scholar
  40. 40.
    Y.X. Luo et al., Nucl. Phys. A 825, 1 (2009)ADSCrossRefGoogle Scholar
  41. 41.
    E.H. Wang et al., Phys. Rev. C 92, 034317 (2015)ADSCrossRefGoogle Scholar
  42. 42.
    W. Urban et al., Phys. Rev. C 69, 017305 (2004)ADSCrossRefGoogle Scholar
  43. 43.
    P.A. Butler, W. Nazarewicz, Nucl. Phys. A 533, 249 (1991)ADSCrossRefGoogle Scholar
  44. 44.
    S. Raman et al., At. Data Nucl. Data Tables 36, 1 (1987)ADSCrossRefGoogle Scholar
  45. 45.
    B. Pritychenko, M. Birch, B. Singh, M. Horoi, At. Data Nucl. Data Tables 107, 1 (2016)ADSCrossRefGoogle Scholar
  46. 46.
    J.L. Egido, L.M. Robledo, Nucl. Phys. A 518, 475 (1990)ADSCrossRefGoogle Scholar
  47. 47.
    H.J. Wollersheim, Nucl. Phys. A 556, 261 (1993)ADSCrossRefGoogle Scholar
  48. 48.
    M. Aiche et al., Nucl. Phys. A 567, 685 (1994)ADSCrossRefGoogle Scholar
  49. 49.
    R.K. Sheline, M.A. Riley, Phys. Rev. C 61, 057301 (2000)ADSCrossRefGoogle Scholar
  50. 50.
    B. Bucher et al., Phys. Rev. Lett. 116, 112503 (2016)ADSCrossRefGoogle Scholar
  51. 51.
    Y.X. Luo et al., Chin. J. Nucl. Phys. Rev. 27, 363 (2010)Google Scholar
  52. 52.
    H. Mach et al., Phys. Rev. C 41, R2469 (1990)ADSCrossRefGoogle Scholar
  53. 53.
    J.F.C. Cocks et al., Phys. Rev. Lett. 78, 2920 (1997)ADSCrossRefGoogle Scholar

Copyright information

© SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  • E. H. Wang
    • 1
  • W. Lewis
    • 1
    • 2
  • C. J. Zachary
    • 1
  • J. H. Hamilton
    • 1
  • A. V. Ramayya
    • 1
  • J. K. Hwang
    • 1
  • S. H. Liu
    • 1
  • N. T. Brewer
    • 1
  • Y. X. Luo
    • 1
    • 3
  • J. O. Rasmussen
    • 3
  • S. J. Zhu
    • 4
  • G. M. Ter-Akopian
    • 5
  • Yu. Ts. Oganessian
    • 5
  1. 1.Department of Physics and AstronomyVanderbilt UniversityNashvilleUSA
  2. 2.Department of PhysicsFurman UniversityGreenvilleUSA
  3. 3.Lawrence Berkeley National LaboratoryBerkeleyUSA
  4. 4.Department of PhysicsTsinghua UniversityBeijingChina
  5. 5.Joint Institute for Nuclear ResearchDubnaRussia

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