論文

査読有り
2020年4月

Extending the Southern Shore of the Island of Inversion to F 28

Physical Review Letters
  • A. Revel
  • ,
  • O. Sorlin
  • ,
  • F. M. Marqués
  • ,
  • Y. Kondo
  • ,
  • J. Kahlbow
  • ,
  • T. Nakamura
  • ,
  • N. A. Orr
  • ,
  • F. Nowacki
  • ,
  • J. A. Tostevin
  • ,
  • C. X. Yuan
  • ,
  • N. L. Achouri
  • ,
  • H. Al Falou
  • ,
  • L. Atar
  • ,
  • T. Aumann
  • ,
  • H. Baba
  • ,
  • K. Boretzky
  • ,
  • C. Caesar
  • ,
  • D. Calvet
  • ,
  • H. Chae
  • ,
  • N. Chiga
  • ,
  • A. Corsi
  • ,
  • H. L. Crawford
  • ,
  • F. Delaunay
  • ,
  • A. Delbart
  • ,
  • Q. Deshayes
  • ,
  • Z. Dombrádi
  • ,
  • C. A. Douma
  • ,
  • Z. Elekes
  • ,
  • P. Fallon
  • ,
  • I. Gašparić
  • ,
  • J. M. Gheller
  • ,
  • J. Gibelin
  • ,
  • A. Gillibert
  • ,
  • M. N. Harakeh
  • ,
  • W. He
  • ,
  • A. Hirayama
  • ,
  • C. R. Hoffman
  • ,
  • M. Holl
  • ,
  • A. Horvat
  • ,
  • Horváth
  • ,
  • J. W. Hwang
  • ,
  • T. Isobe
  • ,
  • N. Kalantar-Nayestanaki
  • ,
  • S. Kawase
  • ,
  • S. Kim
  • ,
  • K. Kisamori
  • ,
  • T. Kobayashi
  • ,
  • D. Körper
  • ,
  • S. Koyama
  • ,
  • I. Kuti
  • ,
  • V. Lapoux
  • ,
  • S. Lindberg
  • ,
  • S. Masuoka
  • ,
  • J. Mayer
  • ,
  • K. Miki
  • ,
  • T. Murakami
  • ,
  • M. Najafi
  • ,
  • K. Nakano
  • ,
  • N. Nakatsuka
  • ,
  • T. Nilsson
  • ,
  • A. Obertelli
  • ,
  • F. De Oliveira Santos
  • ,
  • H. Otsu
  • ,
  • T. Ozaki
  • ,
  • V. Panin
  • ,
  • S. Paschalis
  • ,
  • D. Rossi
  • ,
  • A. T. Saito
  • ,
  • T. Saito
  • ,
  • M. Sasano
  • ,
  • H. Sato
  • ,
  • Y. Satou
  • ,
  • H. Scheit
  • ,
  • F. Schindler
  • ,
  • P. Schrock
  • ,
  • M. Shikata
  • ,
  • Y. Shimizu
  • ,
  • H. Simon
  • ,
  • D. Sohler
  • ,
  • L. Stuhl
  • ,
  • S. Takeuchi
  • ,
  • M. Tanaka
  • ,
  • M. Thoennessen
  • ,
  • H. Törnqvist
  • ,
  • Y. Togano
  • ,
  • T. Tomai
  • ,
  • J. Tscheuschner
  • ,
  • J. Tsubota
  • ,
  • T. Uesaka
  • ,
  • Z. Yang
  • ,
  • M. Yasuda
  • ,
  • K. Yoneda

124
15
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevLett.124.152502

Detailed spectroscopy of the neutron-unbound nucleus F28 has been performed for the first time following proton/neutron removal from Ne29/F29 beams at energies around 230 MeV/nucleon. The invariant-mass spectra were reconstructed for both the F(∗)27+n and F(∗)26+2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the F28 ground state, with Sn(F28)=-199(6) keV, while analysis of the 2n decay channel allowed a considerably improved Sn(F27)=1620(60) keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of F28. Importantly, in the case of the ground state, the reconstructed F27+n momentum distribution following neutron removal from F29 indicates that it arises mainly from the 1p3/2 neutron intruder configuration. This demonstrates that the island of inversion around N=20 includes F28, and most probably F29, and suggests that O28 is not doubly magic.

リンク情報
DOI
https://doi.org/10.1103/PhysRevLett.124.152502
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/32357034
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85084668492&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85084668492&origin=inward
ID情報
  • DOI : 10.1103/PhysRevLett.124.152502
  • ISSN : 0031-9007
  • eISSN : 1079-7114
  • PubMed ID : 32357034
  • SCOPUS ID : 85084668492

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