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Title: Nuclear Charge Radii of B 10 , 11

Journal Article · · Physical Review Letters
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [5];  [1];  [6];  [1];  [3];  [1]
  1. TU Darmstadt, Darmstadt (Germany)
  2. Argonne National Lab. (ANL), Lemont, IL (United States); INFN-TIFPA Trento Institute of Fundamental Physics and Applications, Trento (Italy)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
  4. Univ. of Warsaw, Warsaw (Poland)
  5. Adam Mickiewicz Univ., Poznan (Poland)
  6. GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt (Germany)

The first laser spectroscopic determination of the change in the nuclear charge radius for a five-electron system is reported. This is achieved by combining high-accuracy ab initio mass-shift calculations and a high-accuracy measurement of the isotope shift in the 2s22p 2P1/2 → 2s23s 2S1/2 ground state transition in boron atoms. Accuracy is increased by orders of magnitude for the stable isotopes 10,11B and the results are used to extract their difference in the mean-square charge radius < r$$^{2}_{c}$$ > 11– < r$$^{2}_{c}$$ >10= –0.49(12) fm2. The result is qualitatively explained by a possible cluster structure of the boron nuclei and quantitatively used to benchmark new ab initio nuclear structure calculations using the no-core shell model and Green’s function Monte Carlo approaches. These results are the foundation for a laser spectroscopic determination of the charge radius of the proton-halo candidate 8B.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357; 2014/15/B/ST4/05022
OSTI ID:
1542157
Alternate ID(s):
OSTI ID: 1511886
Journal Information:
Physical Review Letters, Vol. 122, Issue 18; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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