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

doi:10.1103/PhysRevC.69.054321

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

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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.

Original language	English
Article number	054321
Journal	Physical Review C
Volume	69
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.69.054321
Publication status	Published - May 2004
Externally published	Yes

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title = "Investigation of dipole excitations in 142Ce using resonant photon scattering",

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",

year = "2004",

month = may,

doi = "10.1103/PhysRevC.69.054321",

language = "English",

volume = "69",

journal = "Physical Review C",

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publisher = "American Physical Society",

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TY - JOUR

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

Y1 - 2004/5

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.

U2 - 10.1103/PhysRevC.69.054321

DO - 10.1103/PhysRevC.69.054321

M3 - Article

SN - 2469-9985

VL - 69

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 054321

ER -

Investigation of dipole excitations in 142Ce using resonant photon scattering

Abstract

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