Zamora, J. C. ; Sullivan, C. ; Zegers, R. G. 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. ; Neumann-Cosel, P. von ; Noji, S. ; Ong, H. J. ; Péru, S. ; Pereira, J. ; Schmitt, J. ; Tamii, A. ; Titus, R. ; Werner, V. ; Yamamoto, Y. ; Zhou, X. ; Zhu, S. (2020)
Reexamination of isoscalar giant resonances in C-12 and Nb-93 through Li-6 scattering.
In: Physical Review C, 101 (6)
doi: 10.1103/PhysRevC.101.064609
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Inelastic 6Li scattering at 100 MeV/u on 12C and 93Nb 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∘<θlab.<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 6Li scattering allowed for precise determination of the E0 strengths in 12C and 93Nb. It was found that the monopole strength in 12C 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 93Nb 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.

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