Electromagnetic M1 transition strengths from inelastic proton scattering: The cases of Ca 48 and Pb 208

J. Birkhan, H. Matsubara, P. Von Neumann-Cosel, N. Pietralla, V. Yu Ponomarev, A. Richter, A. Tamii, J. Wambach

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34 Citations (Scopus)

Abstract

Inelastic proton scattering at energies of a few hundred million electron volts and extreme forward angles selectively excite the isovector spin-flip M1 (IVSM1) resonance. A method based on isospin symmetry is presented to extract its electromagnetic transition strength from the (p,p′) cross sections. It is applied to Ca48, a key case for an interpretation of the quenching phenomenon of the spin-isospin response, and leads to a M1 strength consistent with an older (e,e′) experiment excluding the almost two times larger value from a recent (γ,n) experiment. Good agreement with electromagnetic probes is observed in Pb208, suggesting the possibility of extracting systematic information on the IVSM1 resonance in heavy nuclei.

Original languageEnglish
Article number041302
JournalPhysical Review C
Volume93
Issue number4
DOIs
Publication statusPublished - 08-04-2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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