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Title: Reexamination of isoscalar giant resonances in 12C and 93Nb through 6Li scattering

Journal Article · · Physical Review C
ORCiD logo [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [3];  [3];  [9];  [3];  [10];  [11];  [3];  [12];  [13];  [3];  [3] more »;  [14];  [15];  [12];  [3];  [13];  [3];  [2];  [16];  [17];  [18];  [3];  [4];  [18];  [2];  [3];  [2];  [17];  [3];  [16];  [6] « less
  1. Univ. de Sao Paulo (Brazil)
  2. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Joint Inst. for Nuclear Astrophysics: CEE; Michigan State Univ., East Lansing, MI (United States)
  3. Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP)
  4. CEA, DAM, DIF, Arpajon (France)
  5. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
  7. Army Research Lab., Adelphi, MD (United States)
  8. Univ. Paris-Saclay, Orsay (France). IJCLab; CEA, DAM, DIF, Arpajon (France)
  9. Univ. of Notre Dame, IN (United States)
  10. Swarthmore College, Swarthmore, PA (United States); Rowan Univ., Glassboro, NJ (United States)
  11. Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP); Univ. of Groningen (Netherlands)
  12. Swarthmore College, Swarthmore, PA (United States)
  13. Tohoku Univ., Sendai (Japan)
  14. Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP); Technical Univ. Darmstadt (Germany)
  15. Univ. of Tokyo, Saitama (Japan). Center for Nuclear Study
  16. Chinese Academy of Sciences (CAS), Lanzhou (China)
  17. Technical Univ. Darmstadt (Germany)
  18. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States). Joint Inst. for Nuclear Astrophysics: CEE

Inelastic Li 6 scattering at 100 MeV/u on C 12 and Nb 93 has been measured with the high-resolution magnetic spectrometer Grand Raiden. The magnetic-rigidity settings of the spectrometer covered excitation energies from 10 to 40 MeV and scattering angles in the range 0 ° < θ lab. < 2 ° . The isoscalar giant monopole resonance was selectively excited in the present data. Measurements free of instrumental background and the very favorable resonance-to-continuum ratio of Li 6 scattering allowed for precise determination of the E 0 strengths in C 12 and Nb 93 . Additionally, it was found that the monopole strength in C 12 exhausts 52 ± 3 (stat.) ± 8 (sys.) % of the energy-weighted sum rule (EWSR), which is considerably higher than results from previous α -scattering experiments. The monopole strength in Nb 93 exhausts 92 ± 4 (stat.) ± 10 (sys.) % of the EWSR, and it is consistent with measurements of nuclei with mass number of A 90 . Such comparison indicates that the isoscalar giant monopole resonance distributions in these nuclei are very similar, and no influence due to nuclear structure was observed.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
FAPESP Foundation; USDOE Office of Science (SC), Nuclear Physics (NP); Bundesministerium für Bildung und Forschung (BMBF); National Science Foundation (NSF); German Research Foundation (DFG)
Grant/Contract Number:
AC02-06CH11357; 2018/04965-4; PHY-1430152; PHY-1565546; PHY-1913554; PHY-1713857; 05P19RDFN1; SFB 1245
OSTI ID:
1765371
Journal Information:
Physical Review C, Vol. 101, Issue 6; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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