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From the same journal

Testing microscopically derived descriptions of nuclear collectivity: Coulomb excitation of 22Mg

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  • J. Henderson
  • G Hackman
  • P. Ruotsalainen
  • S. R. Stroberg
  • K. D. Launey
  • J. D. Holt
  • F. Ali-Rachedi
  • N. Bernier
  • M Bowry
  • R. Caballero-Folch
  • L. J. Evitts
  • R. Frederick
  • A. B. Garnsworthy
  • P. E. Garrett
  • B. Jigmeddorj
  • A. I. Kilic
  • J. Lassen
  • J. Measures
  • D. Muecher
  • B. Olaizola
  • E O'Sullivan
  • O. Paetkau
  • J. Park
  • J. Smallcombe
  • C. E. Svensson
  • C. Y. Wu


Publication details

JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DateAccepted/In press - 23 May 2018
DateE-pub ahead of print - 31 May 2018
DatePublished (current) - 10 Jul 2018
Number of pages6
Pages (from-to)468-473
Early online date31/05/18
Original languageEnglish


Many-body nuclear theory utilizing microscopic or chiral potentials has developed to the point that collectivity might be studied within a microscopic or ab initio framework without the use of effective charges; for example with the proper evolution of the E2 operator, or alternatively, through the use of an appropriate and manageable subset of particle–hole excitations. We present a precise determination of E2 strength in 22Mg and its mirror 22Ne by Coulomb excitation, allowing for rigorous comparisons with theory. No-core symplectic shell-model calculations were performed and agree with the new B(E2) values while in-medium similarity-renormalization-group calculations consistently underpredict the absolute strength, with the missing strength found to have both isoscalar and isovector components. The discrepancy between two microscopic models demonstrates the sensitivity of E2 strength to the choice of many-body approximation employed.

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© 2018 The Author(s). his is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

    Research areas

  • Mg, Ne, Ab initio, Collectivity, Coulomb excitation


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