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

Abstract

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.

Authors:
 [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)
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1340283
Alternate Identifier(s):
OSTI ID: 1336882; OSTI ID: 1490601
Grant/Contract Number:  
NA0002924; NA0002847; SC0013365; AC02-06CH11357; AC05-00OR22725; 05P12RFFTG; 015P15SJCIA; 16-12-10155; 16-12-10161
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 25; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; laser spectroscopy; charge radii; rare isotopes

Citation Formats

Minamisono, Kei, Rossi, D. M., Beerwerth, R., Fritzsche, S., Garand, D., Klose, A., Liu, Yuan, MaaB, B., Mantica, P. F., Miller, A. J., Muller, P., Nazarewicz, W., Nortershauser, W., Olsen, E., Pearson, M. R., Reinhard, P. -G., Saperstein, E. E., Sumithrarachchi, C., and Tolokonnikov, S. V. Charge radii of neutron deficient Fe52,53 produced by projectile fragmentation. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.252501.
Minamisono, Kei, Rossi, D. M., Beerwerth, R., Fritzsche, S., Garand, D., Klose, A., Liu, Yuan, MaaB, B., Mantica, P. F., Miller, A. J., Muller, P., Nazarewicz, W., Nortershauser, W., Olsen, E., Pearson, M. R., Reinhard, P. -G., Saperstein, E. E., Sumithrarachchi, C., & Tolokonnikov, S. V. Charge radii of neutron deficient Fe52,53 produced by projectile fragmentation. United States. doi:10.1103/PhysRevLett.117.252501.
Minamisono, Kei, Rossi, D. M., Beerwerth, R., Fritzsche, S., Garand, D., Klose, A., Liu, Yuan, MaaB, B., Mantica, P. F., Miller, A. J., Muller, P., Nazarewicz, W., Nortershauser, W., Olsen, E., Pearson, M. R., Reinhard, P. -G., Saperstein, E. E., Sumithrarachchi, C., and Tolokonnikov, S. V. Thu . "Charge radii of neutron deficient Fe52,53 produced by projectile fragmentation". United States. doi:10.1103/PhysRevLett.117.252501. https://www.osti.gov/servlets/purl/1340283.
@article{osti_1340283,
title = {Charge radii of neutron deficient Fe52,53 produced by projectile fragmentation},
author = {Minamisono, Kei and Rossi, D. M. and Beerwerth, R. and Fritzsche, S. and Garand, D. and Klose, A. and Liu, Yuan and MaaB, B. and Mantica, P. F. and Miller, A. J. and Muller, P. and Nazarewicz, W. and Nortershauser, W. and Olsen, E. and Pearson, M. R. and Reinhard, P. -G. and Saperstein, E. E. and Sumithrarachchi, C. and Tolokonnikov, S. V.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.117.252501},
journal = {Physical Review Letters},
number = 25,
volume = 117,
place = {United States},
year = {2016},
month = {12}
}

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Figures / Tables:

FIG. 1 FIG. 1: FIG. 1. Hyperfine spectra of 52,53,56Fe. The open circles are the data and the solid lines are best fits of an asymmetric Voigt profile to the data.

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