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Title: Spectroscopy of the T = 2 mirror nuclei 48Fe/48Ti using mirrored knockout reactions

Abstract

A sequence of excited states has been established for the first time in the proton-rich nucleus 48Fe (Z=26, N=22). The technique of mirrored (i.e. analogue) one-nucleon knockout reactions was applied, in which the Tz = ±2 mirror pair, 48Fe/48Ti were populated via one-neutron/one-proton knockout from the secondary beams 49Fe/49V, respectively. The analogue properties of the reactions were used to help establish the new level scheme of 48Fe. The inclusive and exclusive cross sections were determined for the populated states. Large differences between the cross sections for the two mirrored reactions were observed and have been interpreted in terms of different degrees of binding of the mirror nuclei and in the context of the recent observations of suppression of spectroscopic strength as a function of nuclear binding, for knockout reactions on light solid targets. Mirror energy differences (MED) have been determined between the analogue T = 2 states and compared with the shell model predictions. MED for this mirror pair, due to their location in the shell, are especially sensitive to excitations out of the f7/2 shell, and present a stringent test of the shell-model prescription.

Authors:
 [1];  [2];  [3];  [2]; ORCiD logo [2]; ORCiD logo [4];  [4];  [4];  [2];  [4]; ORCiD logo [4]; ORCiD logo [4]; ORCiD logo [5];  [4];  [6]; ORCiD logo [4]; ORCiD logo [7];  [4];  [2]; ORCiD logo [8] more »; ORCiD logo [2];  [9]; ORCiD logo [10];  [2]; ORCiD logo [4] « less
  1. Univ. of York (United Kingdom); Jazan Univ. (Saudi Arabia)
  2. Univ. of York (United Kingdom)
  3. Australian National Univ., Canberra, ACT (Australia)
  4. Michigan State Univ., East Lansing, MI (United States)
  5. Univ. of Edinburgh (United Kingdom); Horia Hulubei National Inst. for R&D in Physics and Nuclear Engineering (IFIN-HH), Bucharest-Măgurele (Romania)
  6. Dipartimento di Fisica e Astronomia dell'Università and INFN, Padova (Italy)
  7. Univ. of Edinburgh (United Kingdom)
  8. Lab. Nazionali di Legnaro (Italy)
  9. Michigan State Univ., East Lansing, MI (United States); Dipartimento di Fisica e Astronomia dell'Università and INFN, Padova (Italy)
  10. Univ. of Surrey, Guildford (United Kingdom)
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1829008
Grant/Contract Number:  
SC0020451; SC0014537; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters. B
Additional Journal Information:
Journal Volume: 823; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Yajzey, R., Bentley, Michael A., Simpson, E. C., Haylett, T., Uthayakumaar, S., Bazin, D., Belarge, J., Bender, P. C., Davies, P. J., Elman, B., Gade, A., Iwasaki, H., Kahl, D., Kobayashi, N., Lenzi, S. M., Longfellow, B., Lonsdale, S. J., Lunderberg, E., Morris, L., Napoli, D. R., Pereira-Lopez, X., Recchia, F., Tostevin, J. A., Wadsworth, R., and Weisshaar, D. Spectroscopy of the T = 2 mirror nuclei 48Fe/48Ti using mirrored knockout reactions. United States: N. p., 2021. Web. doi:10.1016/j.physletb.2021.136757.
Yajzey, R., Bentley, Michael A., Simpson, E. C., Haylett, T., Uthayakumaar, S., Bazin, D., Belarge, J., Bender, P. C., Davies, P. J., Elman, B., Gade, A., Iwasaki, H., Kahl, D., Kobayashi, N., Lenzi, S. M., Longfellow, B., Lonsdale, S. J., Lunderberg, E., Morris, L., Napoli, D. R., Pereira-Lopez, X., Recchia, F., Tostevin, J. A., Wadsworth, R., & Weisshaar, D. Spectroscopy of the T = 2 mirror nuclei 48Fe/48Ti using mirrored knockout reactions. United States. https://doi.org/10.1016/j.physletb.2021.136757
Yajzey, R., Bentley, Michael A., Simpson, E. C., Haylett, T., Uthayakumaar, S., Bazin, D., Belarge, J., Bender, P. C., Davies, P. J., Elman, B., Gade, A., Iwasaki, H., Kahl, D., Kobayashi, N., Lenzi, S. M., Longfellow, B., Lonsdale, S. J., Lunderberg, E., Morris, L., Napoli, D. R., Pereira-Lopez, X., Recchia, F., Tostevin, J. A., Wadsworth, R., and Weisshaar, D. Fri . "Spectroscopy of the T = 2 mirror nuclei 48Fe/48Ti using mirrored knockout reactions". United States. https://doi.org/10.1016/j.physletb.2021.136757. https://www.osti.gov/servlets/purl/1829008.
@article{osti_1829008,
title = {Spectroscopy of the T = 2 mirror nuclei 48Fe/48Ti using mirrored knockout reactions},
author = {Yajzey, R. and Bentley, Michael A. and Simpson, E. C. and Haylett, T. and Uthayakumaar, S. and Bazin, D. and Belarge, J. and Bender, P. C. and Davies, P. J. and Elman, B. and Gade, A. and Iwasaki, H. and Kahl, D. and Kobayashi, N. and Lenzi, S. M. and Longfellow, B. and Lonsdale, S. J. and Lunderberg, E. and Morris, L. and Napoli, D. R. and Pereira-Lopez, X. and Recchia, F. and Tostevin, J. A. and Wadsworth, R. and Weisshaar, D.},
abstractNote = {A sequence of excited states has been established for the first time in the proton-rich nucleus 48Fe (Z=26, N=22). The technique of mirrored (i.e. analogue) one-nucleon knockout reactions was applied, in which the Tz = ±2 mirror pair, 48Fe/48Ti were populated via one-neutron/one-proton knockout from the secondary beams 49Fe/49V, respectively. The analogue properties of the reactions were used to help establish the new level scheme of 48Fe. The inclusive and exclusive cross sections were determined for the populated states. Large differences between the cross sections for the two mirrored reactions were observed and have been interpreted in terms of different degrees of binding of the mirror nuclei and in the context of the recent observations of suppression of spectroscopic strength as a function of nuclear binding, for knockout reactions on light solid targets. Mirror energy differences (MED) have been determined between the analogue T = 2 states and compared with the shell model predictions. MED for this mirror pair, due to their location in the shell, are especially sensitive to excitations out of the f7/2 shell, and present a stringent test of the shell-model prescription.},
doi = {10.1016/j.physletb.2021.136757},
journal = {Physics Letters. B},
number = ,
volume = 823,
place = {United States},
year = {Fri Oct 29 00:00:00 EDT 2021},
month = {Fri Oct 29 00:00:00 EDT 2021}
}

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