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Proton Distribution Radii of O 16-24: Signatures of New Shell Closures and Neutron Skin

  • S. Kaur
  • , R. Kanungo
  • , W. Horiuchi
  • , G. Hagen
  • , J. D. Holt
  • , B. S. Hu
  • , T. Miyagi
  • , T. Suzuki
  • , F. Ameil
  • , J. Atkinson
  • , Y. Ayyad
  • , S. Bagchi
  • , D. Cortina-Gil
  • , I. Dillmann
  • , A. Estradé
  • , A. Evdokimov
  • , F. Farinon
  • , H. Geissel
  • , G. Guastalla
  • , R. Janik
  • R. Knöbel, J. Kurcewicz, Yu A. Litvinov, M. Marta, M. Mostazo, I. Mukha, C. Nociforo, H. J. Ong, T. Otsuka, S. Pietri, A. Prochazka, C. Scheidenberger, B. Sitar, P. Strmen, M. Takechi, J. Tanaka, I. Tanihata, S. Terashima, J. Vargas, H. Weick, J. S. Winfield

科研成果: 期刊稿件文章同行评审

摘要

The root mean square radii of the proton density distribution in O16-24 derived from measurements of charge changing cross sections with a carbon target at ∼900A MeV together with the matter radii portray thick neutron skin for O22-24 despite O22,24 being doubly magic. Imprints of the shell closures at N=14 and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with ab initio calculations employing the chiral NNLOsat interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data.

源语言英语
文章编号142502
期刊Physical Review Letters
129
14
DOI
出版状态已出版 - 30 9月 2022

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