Giant M1 resonance in Sn120 and the quenching of the nucleon spin g factors

Ricardo Alarcon, R. M. Laszewski, D. S. Dale

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The distribution of magnetic dipole transition strength in Sn120 has been measured at excitations between 7.3 and 9.3 MeV using highly polarized tagged photons. A total M1 strength of eV corresponding to B(M1)=8.8-0.9+1.102 was found to be more or less uniformly distributed throughout the region. This result and previous polarized photon measurements in Zr90 and the Pb nuclei present a consistent picture of M1 strengths in closed-shell nuclei in terms of the required normalization for the spin nucleon g factors. Normalizations with respect to the bare nucleon values are 0.680.02 and 0.640.03 for the proton and neutron spin g factors, respectively.

Original languageEnglish (US)
JournalPhysical Review C
Volume40
Issue number3
DOIs
StatePublished - 1989
Externally publishedYes

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quenching
nuclei
photons
magnetic dipoles
neutrons
protons
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Giant M1 resonance in Sn120 and the quenching of the nucleon spin g factors. / Alarcon, Ricardo; Laszewski, R. M.; Dale, D. S.

In: Physical Review C, Vol. 40, No. 3, 1989.

Research output: Contribution to journalArticle

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AB - The distribution of magnetic dipole transition strength in Sn120 has been measured at excitations between 7.3 and 9.3 MeV using highly polarized tagged photons. A total M1 strength of eV corresponding to B(M1)=8.8-0.9+1.102 was found to be more or less uniformly distributed throughout the region. This result and previous polarized photon measurements in Zr90 and the Pb nuclei present a consistent picture of M1 strengths in closed-shell nuclei in terms of the required normalization for the spin nucleon g factors. Normalizations with respect to the bare nucleon values are 0.680.02 and 0.640.03 for the proton and neutron spin g factors, respectively.

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