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Title: Charge radii of neutron deficient Fe 52 , 53 produced by projectile fragmentation

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [3];  [1];  [4]; ORCiD logo [5];  [2];  [1];  [1];  [6];  [7];  [2];  [1];  [8];  [9];  [10];  [1];  [11]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Technische Univ. Darmstadt, Darmstadt (Germany)
  3. Helmholtz-Institut Jena, Jena (Germany); Friedrich-Schiller-Univ. Jena, Jena (Germany)
  4. Augustana College, Sioux Falls, SD (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Argonne National Lab. (ANL), Lemont, IL (United States)
  7. Michigan State Univ., East Lansing, MI (United States); Univ. of Warsaw, Warsaw (Poland)
  8. TRIUMF, Vancouver, BC (Canada)
  9. Univ. Erlangen, Erlangen (Germany)
  10. National Research Centre "Kurchatov Institute," Moscow (Russia); National Research Nuclear Univ. MEPhl, Moscow (Russia)
  11. National Research Centre "Kurchatov Institute," Moscow (Russia); Moscow Institute of Physics and Technology, Dolgoprudny (Russia)

Bunched-beam collinear laser spectroscopy is performed on neutron deficient 52,53Fe prepared through in-flight separation followed by a gas stopping. This novel scheme is a major step to reach nuclides far from the stability line in laser spectroscopy. Differential mean-square charge radii δ$$\langle$$r2$$\rangle$$ of 52,53Fe are determined relative to stable 56Fe as δ$$\langle$$r2$$\rangle$$56,52=-0.034(13) fm2 and δ$$\langle$$r2$$\rangle$$56,53=-0.218(13) fm2, respectively, from the isotope shift of atomic hyperfine structures. The multiconfiguration Dirac-Fock method is used to calculate atomic factors to deduce δ$$\langle$$r2$$\rangle$$. The values of δ$$\langle$$r2$$\rangle$$ exhibit a minimum at the N=28 neutron shell closure. The nuclear density functional theory with Fayans and Skyrme energy density functionals is used to interpret the data. The trend of δ$$\langle$$r2$$\rangle$$ along the Fe isotopic chain results from an interplay between single-particle shell structure, pairing, and polarization effects and provides important data for understanding the intricate trend in the δ$$\langle$$r2$$\rangle$$ of closed-shell Ca isotopes.

Research Organization:
Michigan State Univ., East Lansing, MI (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0002924; NA0002847; SC0013365; AC02-06CH11357; AC05-00OR22725; 05P12RFFTG; 015P15SJCIA; 16-12-10155; 16-12-10161
OSTI ID:
1340283
Alternate ID(s):
OSTI ID: 1336882; OSTI ID: 1490601
Journal Information:
Physical Review Letters, Vol. 117, Issue 25; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 38 works
Citation information provided by
Web of Science

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