Low-lying dipole strength in the N=28 shell-closure nucleus 52Cr

H. Pai; J. Beller; N. Benouaret; J.  Enders; T. Hartmann; O. Karg; P. von Neumann-Cosel; N. Pietralla; V. Yu. Ponomarev; C. Romig; Marcus Scheck; L. Schnorrenberger; S.  Volz; M. Zweidinger

doi:10.1103/PhysRevC.88.054316

Low-lying dipole strength in the N=28 shell-closure nucleus ⁵²Cr

H. Pai, J. Beller, N. Benouaret, J. Enders, T. Hartmann, O. Karg, P. von Neumann-Cosel, N. Pietralla, V. Yu. Ponomarev, C. Romig, Marcus Scheck, L. Schnorrenberger, S. Volz, M. Zweidinger

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Abstract

The low-lying dipole strength of the N=28 closed-shell nucleus 52Cr was studied with nuclear resonance fluorescence up to 9.9 MeV, using bremsstrahlung at the superconducting Darmstadt linear electron accelerator S-DALINAC. Twenty-eight spin-1 states were observed between 5.0 and 9.5 MeV excitation energy, 14 of which for the first time. Both electric dipole excitations (E1, around 8 MeV) and magnetic dipole excitations (M1, around 9 MeV) were detected. Microscopic calculations within the quasiparticle-phonon nuclear model were performed and show good agreement with experimental results. The structure of E1 and M1 excitations, respectively, is discussed.

Original language	English
Article number	054316
Journal	Physical Review C
Volume	88
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.88.054316
Publication status	Published - 18 Nov 2013

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title = "Low-lying dipole strength in the N=28 shell-closure nucleus 52Cr",

abstract = "The low-lying dipole strength of the N=28 closed-shell nucleus 52Cr was studied with nuclear resonance fluorescence up to 9.9 MeV, using bremsstrahlung at the superconducting Darmstadt linear electron accelerator S-DALINAC. Twenty-eight spin-1 states were observed between 5.0 and 9.5 MeV excitation energy, 14 of which for the first time. Both electric dipole excitations (E1, around 8 MeV) and magnetic dipole excitations (M1, around 9 MeV) were detected. Microscopic calculations within the quasiparticle-phonon nuclear model were performed and show good agreement with experimental results. The structure of E1 and M1 excitations, respectively, is discussed.",

author = "H. Pai and J. Beller and N. Benouaret and J. Enders and T. Hartmann and O. Karg and {von Neumann-Cosel}, P. and N. Pietralla and Ponomarev, {V. Yu.} and C. Romig and Marcus Scheck and L. Schnorrenberger and S. Volz and M. Zweidinger",

year = "2013",

month = nov,

day = "18",

doi = "10.1103/PhysRevC.88.054316",

language = "English",

volume = "88",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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TY - JOUR

T1 - Low-lying dipole strength in the N=28 shell-closure nucleus 52Cr

AU - Pai, H.

AU - Beller, J.

AU - Benouaret, N.

AU - Enders, J.

AU - Hartmann, T.

AU - Karg, O.

AU - von Neumann-Cosel, P.

AU - Pietralla, N.

AU - Ponomarev, V. Yu.

AU - Romig, C.

AU - Scheck, Marcus

AU - Schnorrenberger, L.

AU - Volz, S.

AU - Zweidinger, M.

PY - 2013/11/18

Y1 - 2013/11/18

N2 - The low-lying dipole strength of the N=28 closed-shell nucleus 52Cr was studied with nuclear resonance fluorescence up to 9.9 MeV, using bremsstrahlung at the superconducting Darmstadt linear electron accelerator S-DALINAC. Twenty-eight spin-1 states were observed between 5.0 and 9.5 MeV excitation energy, 14 of which for the first time. Both electric dipole excitations (E1, around 8 MeV) and magnetic dipole excitations (M1, around 9 MeV) were detected. Microscopic calculations within the quasiparticle-phonon nuclear model were performed and show good agreement with experimental results. The structure of E1 and M1 excitations, respectively, is discussed.

AB - The low-lying dipole strength of the N=28 closed-shell nucleus 52Cr was studied with nuclear resonance fluorescence up to 9.9 MeV, using bremsstrahlung at the superconducting Darmstadt linear electron accelerator S-DALINAC. Twenty-eight spin-1 states were observed between 5.0 and 9.5 MeV excitation energy, 14 of which for the first time. Both electric dipole excitations (E1, around 8 MeV) and magnetic dipole excitations (M1, around 9 MeV) were detected. Microscopic calculations within the quasiparticle-phonon nuclear model were performed and show good agreement with experimental results. The structure of E1 and M1 excitations, respectively, is discussed.

U2 - 10.1103/PhysRevC.88.054316

DO - 10.1103/PhysRevC.88.054316

M3 - Article

SN - 2469-9985

VL - 88

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 054316

ER -

Low-lying dipole strength in the N=28 shell-closure nucleus 52Cr

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Low-lying dipole strength in the N=28 shell-closure nucleus ⁵²Cr