Experimental evidences for low-lying octupole isovector states

Research output: Contribution to conferencePaper

Abstract

An evaluation of data obtained with the ( n,n'γ) technique revealed in near spherical nuclei strong M1 components in transitions connecting higher-lying 3 − i states with the 3 − 1 state. The ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 3 − 1 | M 1|3 − i ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements of these transitions are in the order of 1 μN. In the quadrupole sector strong ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 2 + 1 | M 1|2 + ms ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements serve as fingerprints for the identification of low-lying 2 + ms isovector states, which are commonly referred to as mixed-symmetry states. The ratio of the two matrix elements scales for most candidates to unity indicating similar physics. Additional evidence for the assignment of the 3 − i states as low-lying octupole isovector states is provided by particle-scattering experiments, e.g. ( e, e' ) or ( p, p' ). The octupole states under investigation exhibit enhanced scattering cross sections. This observation is in accordance with the assignment of a one-phonon nature to these octupole excitations.
Original languageEnglish
DOIs
Publication statusPublished - 2012
Externally publishedYes

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matrices
scattering cross sections
unity
sectors
quadrupoles
physics
nuclei
evaluation
symmetry
scattering
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@conference{a4dcab31da8c4ea3be5b580e3102bafc,
title = "Experimental evidences for low-lying octupole isovector states",
abstract = "An evaluation of data obtained with the ( n,n'γ) technique revealed in near spherical nuclei strong M1 components in transitions connecting higher-lying 3 − i states with the 3 − 1 state. The ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 3 − 1 | M 1|3 − i ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements of these transitions are in the order of 1 μN. In the quadrupole sector strong ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 2 + 1 | M 1|2 + ms ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements serve as fingerprints for the identification of low-lying 2 + ms isovector states, which are commonly referred to as mixed-symmetry states. The ratio of the two matrix elements scales for most candidates to unity indicating similar physics. Additional evidence for the assignment of the 3 − i states as low-lying octupole isovector states is provided by particle-scattering experiments, e.g. ( e, e' ) or ( p, p' ). The octupole states under investigation exhibit enhanced scattering cross sections. This observation is in accordance with the assignment of a one-phonon nature to these octupole excitations.",
author = "M Scheck",
year = "2012",
doi = "10.1088/1742-6596/366/1/012040",
language = "English",

}

Experimental evidences for low-lying octupole isovector states. / Scheck, M.

2012.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Experimental evidences for low-lying octupole isovector states

AU - Scheck, M

PY - 2012

Y1 - 2012

N2 - An evaluation of data obtained with the ( n,n'γ) technique revealed in near spherical nuclei strong M1 components in transitions connecting higher-lying 3 − i states with the 3 − 1 state. The ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 3 − 1 | M 1|3 − i ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements of these transitions are in the order of 1 μN. In the quadrupole sector strong ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 2 + 1 | M 1|2 + ms ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements serve as fingerprints for the identification of low-lying 2 + ms isovector states, which are commonly referred to as mixed-symmetry states. The ratio of the two matrix elements scales for most candidates to unity indicating similar physics. Additional evidence for the assignment of the 3 − i states as low-lying octupole isovector states is provided by particle-scattering experiments, e.g. ( e, e' ) or ( p, p' ). The octupole states under investigation exhibit enhanced scattering cross sections. This observation is in accordance with the assignment of a one-phonon nature to these octupole excitations.

AB - An evaluation of data obtained with the ( n,n'γ) technique revealed in near spherical nuclei strong M1 components in transitions connecting higher-lying 3 − i states with the 3 − 1 state. The ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 3 − 1 | M 1|3 − i ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements of these transitions are in the order of 1 μN. In the quadrupole sector strong ##IMG## [http://ej.iop.org/icons/Entities/langle.gif] langle 2 + 1 | M 1|2 + ms ##IMG## [http://ej.iop.org/icons/Entities/rangle.gif] rangle matrix elements serve as fingerprints for the identification of low-lying 2 + ms isovector states, which are commonly referred to as mixed-symmetry states. The ratio of the two matrix elements scales for most candidates to unity indicating similar physics. Additional evidence for the assignment of the 3 − i states as low-lying octupole isovector states is provided by particle-scattering experiments, e.g. ( e, e' ) or ( p, p' ). The octupole states under investigation exhibit enhanced scattering cross sections. This observation is in accordance with the assignment of a one-phonon nature to these octupole excitations.

U2 - 10.1088/1742-6596/366/1/012040

DO - 10.1088/1742-6596/366/1/012040

M3 - Paper

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