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Excitation of isovector giant resonances by inelastic scattering of positive pions on90Zr at 226 MeV

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

We studied the region of giant resonances with positive pions of 226 MeV scattered inelastically on90Zr. Two groups of resonances were seen: the first structure between 12 and 19 MeV excitation energy is explained as a sum of the isoscalar quadrupole resonance at 14 MeV, the isovector dipole resonance at 16.5 MeV and possibly some E0 strength. The second group between 24 and 34 MeV excitation energy also corresponds to more than a simple multipolarity and may be described as a sum of a monopole and a quadrupole isovector resonance.

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On leave from TRIUMF and University of British-Columbia, Vancouver, Canada

We would like to thank Dr. Frois for making the target available and Dr. Rost for his help with the computer code CHOPIN. This research was partially supported by the Swiss National Science Foundation.

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Marty, N., Morlet, M., Willis, A. et al. Excitation of isovector giant resonances by inelastic scattering of positive pions on90Zr at 226 MeV. Z Physik A 298, 149–152 (1980). https://doi.org/10.1007/BF01554055

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  • DOI: https://doi.org/10.1007/BF01554055

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