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

Zamora, J. C.; Sullivan, C.; Zegers, R. T.; Aoi, N.; Batail, L.; Bazin, D.; Carpenter, M.; Carroll, J. J.; Deloncle, I.; Fang, Y. D.; Fujita, H.; Garg, U.; Gey, G.; Guess, C. J.; Harakeh, M. N.; Hoang, T. H.; Hudson, E.; Ichige, N.; Ideguchi, E.; Inoue, A.; Isaak, J.; Iwamoto, C.; Kacir, C.; Kobayashi, N.; Koike, T.; Kumar Raju, M.; Lipschutz, S.; Liu, M.; von Neumann-Cosel, P.; Noji, S.; Ong, H. J.; Péru, S.; Pereira, J.; Schmitt, J.; Tamii, A.; Titus, R.; Werner, V.; Yamamoto, Y.; Zhou, X.; Zhu, S.

doi:10.1103/physrevc.101.064609

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

Journal Article · Thu Jun 11 00:00:00 UTC 2020 · Physical Review C

DOI: https://doi.org/10.1103/physrevc.101.064609 · OSTI ID:1765371

^[1]; Sullivan, C. ^[2]; Zegers, R. T. ^[2]; Aoi, N. ^[3]; Batail, L. ^[4]; Bazin, D. ^[5]; Carpenter, M. ^[6]; Carroll, J. J. ^[7]; Deloncle, I. ^[8]; Fang, Y. D. ^[3]; Fujita, H. ^[3]; Garg, U. ^[9]; Gey, G. ^[3]; Guess, C. J. ^[10]; Harakeh, M. N. ^[11]; Hoang, T. H. ^[3]; Hudson, E. ^[12]; Ichige, N. ^[13]; Ideguchi, E. ^[3]; Inoue, A. ^[3] more »

Univ. de Sao Paulo (Brazil)
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)
Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP)
CEA, DAM, DIF, Arpajon (France)
Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Lab.; Michigan State Univ., East Lansing, MI (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Army Research Lab., Adelphi, MD (United States)
Univ. Paris-Saclay, Orsay (France). IJCLab; CEA, DAM, DIF, Arpajon (France)
Univ. of Notre Dame, IN (United States)
Swarthmore College, Swarthmore, PA (United States); Rowan Univ., Glassboro, NJ (United States)
Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP); Univ. of Groningen (Netherlands)
Swarthmore College, Swarthmore, PA (United States)
Tohoku Univ., Sendai (Japan)
Osaka Univ. (Japan). Research Center for Nuclear Physics (RCNP); Technical Univ. Darmstadt (Germany)
Univ. of Tokyo, Saitama (Japan). Center for Nuclear Study
Chinese Academy of Sciences (CAS), Lanzhou (China)
Technical Univ. Darmstadt (Germany)
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 ${}_{6}{Li}$ scattering at 100 MeV/u on ${}_{12}C$ and ${}_{93}{Nb}$ 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 ${}_{6}{Li}$ scattering allowed for precise determination of the $E 0$ strengths in ${}_{12}C$ and ${}_{93}{Nb}$ . Additionally, it was found that the monopole strength in ${}_{12}C$ exhausts $52 \pm 3^{(stat.)} \pm 8^{(sys.)} %$ of the energy-weighted sum rule (EWSR), which is considerably higher than results from previous $α$ -scattering experiments. The monopole strength in ${}_{93}{Nb}$ exhausts $92 \pm 4^{(stat.)} \pm 10^{(sys.)} %$ of the EWSR, and it is consistent with measurements of nuclei with mass number of $A \approx 90$ . 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.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: Bundesministerium für Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); FAPESP Foundation; National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1765371

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 6 Vol. 101; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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

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