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Competition Between Excited Core States and $1$ $\hbar \omega$ Single-particle Excitations at Comparable Energies in $^{207}$Pb from Photon Scattering

Publication ,  Journal Article
Pietralla, N; Li, TC; Fritzsche, M; Ahmed, MW; Costin, TAA; Enders, J; Li, J; uller, SM; Neumann-Cosel, PV; Pinayev, IV; Ponomarev, VY; Wu, YK ...
Published in: Phys. Lett. B
2009

The Pb(\vec{γ} ,γ') photon scattering reaction has been studied with the nearly monochromatic, linearly polarized photon beams at the High Intensity γ -ray Source (HIγ S) at the DFELL. Azimuthal scattering intensity asymmetries measured with respect to the polarization plane of the beam have been used for the first time to assign both the spin and parity quantum numbers of dipole excited states of 206,207,208Pb at excitation energies in the vicinity of 5.5 MeV. Evidence for dominant particle–core coupling is deduced from these results along with information on excitation energies and electromagnetic transition matrix elements. Implications of the existence of weakly coupled states built on highly excited core states in competition with 1¯hω single particle (hole) excitations at comparable energies are discussed.

Duke Scholars

Published In

Phys. Lett. B

Publication Date

2009

Volume

681

Start / End Page

134 / 138

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics
 

Citation

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Pietralla, N., Li, T. C., Fritzsche, M., Ahmed, M. W., Costin, T. A. A., Enders, J., … Zilges, A. (2009). Competition Between Excited Core States and $1$ $\hbar \omega$ Single-particle Excitations at Comparable Energies in $^{207}$Pb from Photon Scattering. Phys. Lett. B, 681, 134–138.
Pietralla, N., T. C. Li, M. Fritzsche, M. W. Ahmed, T Ahn A. Costin, J. Enders, J. Li, et al. “Competition Between Excited Core States and $1$ $\hbar \omega$ Single-particle Excitations at Comparable Energies in $^{207}$Pb from Photon Scattering.” Phys. Lett. B 681 (2009): 134–38.
Pietralla N, Li TC, Fritzsche M, Ahmed MW, Costin TAA, Enders J, et al. Competition Between Excited Core States and $1$ $\hbar \omega$ Single-particle Excitations at Comparable Energies in $^{207}$Pb from Photon Scattering. Phys Lett B. 2009;681:134–8.
Pietralla N, Li TC, Fritzsche M, Ahmed MW, Costin TAA, Enders J, Li J, uller SM, Neumann-Cosel PV, Pinayev IV, Ponomarev VY, Savran D, Tonchev AP, Tornow W, Weller HR, Werner V, Wu YK, Zilges A. Competition Between Excited Core States and $1$ $\hbar \omega$ Single-particle Excitations at Comparable Energies in $^{207}$Pb from Photon Scattering. Phys Lett B. 2009;681:134–138.

Published In

Phys. Lett. B

Publication Date

2009

Volume

681

Start / End Page

134 / 138

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics