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Two-phonon 1(-) state in 112 Sn observed in resonant photon scattering

  • I. Pysmenetska
  • , S. Walter
  • , J. Enders
  • , H. von Garrel
  • , O. Karg
  • , U. Kneissl
  • , C. Kohstall
  • , P. von Neumann-Cosel
  • , H.H. Pitz
  • , V.Yu. Ponomarev
  • , M. Scheck
  • , F. Stedile
  • , S. Volz

Research output: Contribution to journalArticlepeer-review

Abstract

Results of a photon scattering experiment on 112 Sn using bremsstrahlung with an endpoint energy of E0=3.8MeV are reported. A J=1state at Ex=3434(1 keV has been excited. Its decay width into the ground state amounts to Γ0=151(17)
meV, making it a candidate for a [2+⊗3−]1−two-phonon state. The results for
112 Snare compared with quasiparticle-phonon model calculations as well as the systematics of the lowest lying 1−states established in other even-mass tin isotopes. In contrast to findings in the heavier stable even-mass Sn isotopes, no
2+states between 2 and 3.5 MeV excitation energy have been detected in the present experiment.
Original languageEnglish
Article number017302
JournalPhysical Review C
Volume73
Issue number1
DOIs
Publication statusPublished - 24 Jan 2006
Externally publishedYes

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