Investigation of dipole excitations in 142Ce using resonant photon scattering

A. Gade, N. Pietralla, P. von Brentano, D. Belic, C. Fransen, U. Kneissl, C. Kohstall, A. Linnemann, H.H. Pitz, M. Scheck, N.A. Smirnova, F. Stedile, V. Werner

Research output: Contribution to journalArticle

Abstract

A photon scattering experiment with bremsstrahlung has been performed on the vibrational nucleus 142Ce up to a photon endpoint energy of 4.1MeV. Fourteen dipole excitations have been observed between 2.1 and 3.9MeV, five of them for the first time. A candidate for the 1−dipole member of the recently proposed quintuplet of negative parity (2+1,ms⊗3−1)(J−), involving the 2+1,ms
isovector quadrupole excitation in the valence shell, has been identified. This exotic 1−msstate has been predicted within the sdf-IBM-2 and is expected to be accessible to photon scattering measurements. Solely one of nine J=1 states in the energy region of interest shows a decay pattern compatible with the model predictions for the 1−ms state.
Original languageEnglish
Article number054321
JournalPhysical Review C
Volume69
Issue number5
DOIs
Publication statusPublished - May 2004
Externally publishedYes

Cite this

Gade, A., Pietralla, N., von Brentano, P., Belic, D., Fransen, C., Kneissl, U., ... Werner, V. (2004). Investigation of dipole excitations in 142Ce using resonant photon scattering. Physical Review C, 69(5), [054321]. https://doi.org/10.1103/PhysRevC.69.054321
Gade, A. ; Pietralla, N. ; von Brentano, P. ; Belic, D. ; Fransen, C. ; Kneissl, U. ; Kohstall, C. ; Linnemann, A. ; Pitz, H.H. ; Scheck, M. ; Smirnova, N.A. ; Stedile, F. ; Werner, V. / Investigation of dipole excitations in 142Ce using resonant photon scattering. In: Physical Review C. 2004 ; Vol. 69, No. 5.
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abstract = "A photon scattering experiment with bremsstrahlung has been performed on the vibrational nucleus 142Ce up to a photon endpoint energy of 4.1MeV. Fourteen dipole excitations have been observed between 2.1 and 3.9MeV, five of them for the first time. A candidate for the 1−dipole member of the recently proposed quintuplet of negative parity (2+1,ms⊗3−1)(J−), involving the 2+1,ms isovector quadrupole excitation in the valence shell, has been identified. This exotic 1−msstate has been predicted within the sdf-IBM-2 and is expected to be accessible to photon scattering measurements. Solely one of nine J=1 states in the energy region of interest shows a decay pattern compatible with the model predictions for the 1−ms state.",
author = "A. Gade and N. Pietralla and {von Brentano}, P. and D. Belic and C. Fransen and U. Kneissl and C. Kohstall and A. Linnemann and H.H. Pitz and M. Scheck and N.A. Smirnova and F. Stedile and V. Werner",
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Gade, A, Pietralla, N, von Brentano, P, Belic, D, Fransen, C, Kneissl, U, Kohstall, C, Linnemann, A, Pitz, HH, Scheck, M, Smirnova, NA, Stedile, F & Werner, V 2004, 'Investigation of dipole excitations in 142Ce using resonant photon scattering' Physical Review C, vol. 69, no. 5, 054321. https://doi.org/10.1103/PhysRevC.69.054321

Investigation of dipole excitations in 142Ce using resonant photon scattering. / Gade, A.; Pietralla, N.; von Brentano, P.; Belic, D.; Fransen, C.; Kneissl, U.; Kohstall, C.; Linnemann, A.; Pitz, H.H.; Scheck, M.; Smirnova, N.A.; Stedile, F.; Werner, V.

In: Physical Review C, Vol. 69, No. 5, 054321, 05.2004.

Research output: Contribution to journalArticle

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T1 - Investigation of dipole excitations in 142Ce using resonant photon scattering

AU - Gade, A.

AU - Pietralla, N.

AU - von Brentano, P.

AU - Belic, D.

AU - Fransen, C.

AU - Kneissl, U.

AU - Kohstall, C.

AU - Linnemann, A.

AU - Pitz, H.H.

AU - Scheck, M.

AU - Smirnova, N.A.

AU - Stedile, F.

AU - Werner, V.

PY - 2004/5

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N2 - A photon scattering experiment with bremsstrahlung has been performed on the vibrational nucleus 142Ce up to a photon endpoint energy of 4.1MeV. Fourteen dipole excitations have been observed between 2.1 and 3.9MeV, five of them for the first time. A candidate for the 1−dipole member of the recently proposed quintuplet of negative parity (2+1,ms⊗3−1)(J−), involving the 2+1,ms isovector quadrupole excitation in the valence shell, has been identified. This exotic 1−msstate has been predicted within the sdf-IBM-2 and is expected to be accessible to photon scattering measurements. Solely one of nine J=1 states in the energy region of interest shows a decay pattern compatible with the model predictions for the 1−ms state.

AB - A photon scattering experiment with bremsstrahlung has been performed on the vibrational nucleus 142Ce up to a photon endpoint energy of 4.1MeV. Fourteen dipole excitations have been observed between 2.1 and 3.9MeV, five of them for the first time. A candidate for the 1−dipole member of the recently proposed quintuplet of negative parity (2+1,ms⊗3−1)(J−), involving the 2+1,ms isovector quadrupole excitation in the valence shell, has been identified. This exotic 1−msstate has been predicted within the sdf-IBM-2 and is expected to be accessible to photon scattering measurements. Solely one of nine J=1 states in the energy region of interest shows a decay pattern compatible with the model predictions for the 1−ms state.

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Gade A, Pietralla N, von Brentano P, Belic D, Fransen C, Kneissl U et al. Investigation of dipole excitations in 142Ce using resonant photon scattering. Physical Review C. 2004 May;69(5). 054321. https://doi.org/10.1103/PhysRevC.69.054321