Identification of the Jπ=1- two-phonon state of 88Sr

N. Pietralla; V. N. Litvinenko; S. Hartman; F. F. Mikhailov; I. V. Pinayev; G. Swift; M. W. Ahmed; J. H. Kelley; S. O. Nelson; R. Prior; K. Sabourov; A. P. Tonchev; H. R. Weller

doi:10.1103/PhysRevC.65.047305

Identification of the J^π=1^- two-phonon state of ⁸⁸Sr

N. Pietralla, V. N. Litvinenko, S. Hartman, F. F. Mikhailov, I. V. Pinayev, G. Swift, M. W. Ahmed, J. H. Kelley, S. O. Nelson, R. Prior, K. Sabourov, A. P. Tonchev, H. R. Weller

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Abstract

The linearly polarized γ-ray beam produced by the HIγS facility has been used to determine the parity of two previously known dipole excitations in ⁸⁸Sr. The azimuthal asymmetry of γ rays produced in the process of nuclear resonance fluorescence indicated that the dipole state at 4.742 MeV, recently discussed as a new form of M 1 excitation, is in fact a 1^- (E1) state. The 1^- state at 4.742 MeV must, therefore, be reconsidered as the J^π = 1^-1 member of the quadrupole-octupole coupled two-phonon multiplet. A second state at 7.53.5 MeV was also assigned J^π = 1^-.

Original language	English
Article number	047305
Pages (from-to)	473051-473053
Number of pages	3
Journal	Physical Review C - Nuclear Physics
Volume	65
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.65.047305
State	Published - Apr 2002
Externally published	Yes

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Pietralla, N., Litvinenko, V. N., Hartman, S., Mikhailov, F. F., Pinayev, I. V., Swift, G., Ahmed, M. W., Kelley, J. H., Nelson, S. O., Prior, R., Sabourov, K., Tonchev, A. P., & Weller, H. R. (2002). Identification of the J^π=1^- two-phonon state of ⁸⁸Sr. Physical Review C - Nuclear Physics, 65(4), 473051-473053. Article 047305. https://doi.org/10.1103/PhysRevC.65.047305

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title = "Identification of the Jπ=1- two-phonon state of 88Sr",

abstract = "The linearly polarized γ-ray beam produced by the HIγS facility has been used to determine the parity of two previously known dipole excitations in 88Sr. The azimuthal asymmetry of γ rays produced in the process of nuclear resonance fluorescence indicated that the dipole state at 4.742 MeV, recently discussed as a new form of M 1 excitation, is in fact a 1- (E1) state. The 1- state at 4.742 MeV must, therefore, be reconsidered as the Jπ = 1-1 member of the quadrupole-octupole coupled two-phonon multiplet. A second state at 7.53.5 MeV was also assigned Jπ = 1-.",

author = "N. Pietralla and Litvinenko, {V. N.} and S. Hartman and Mikhailov, {F. F.} and Pinayev, {I. V.} and G. Swift and Ahmed, {M. W.} and Kelley, {J. H.} and Nelson, {S. O.} and R. Prior and K. Sabourov and Tonchev, {A. P.} and Weller, {H. R.}",

year = "2002",

month = apr,

doi = "10.1103/PhysRevC.65.047305",

language = "English",

volume = "65",

pages = "473051--473053",

journal = "Physical Review C - Nuclear Physics",

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T1 - Identification of the Jπ=1- two-phonon state of 88Sr

AU - Pietralla, N.

AU - Litvinenko, V. N.

AU - Hartman, S.

AU - Mikhailov, F. F.

AU - Pinayev, I. V.

AU - Swift, G.

AU - Ahmed, M. W.

AU - Kelley, J. H.

AU - Nelson, S. O.

AU - Prior, R.

AU - Sabourov, K.

AU - Tonchev, A. P.

AU - Weller, H. R.

PY - 2002/4

Y1 - 2002/4

N2 - The linearly polarized γ-ray beam produced by the HIγS facility has been used to determine the parity of two previously known dipole excitations in 88Sr. The azimuthal asymmetry of γ rays produced in the process of nuclear resonance fluorescence indicated that the dipole state at 4.742 MeV, recently discussed as a new form of M 1 excitation, is in fact a 1- (E1) state. The 1- state at 4.742 MeV must, therefore, be reconsidered as the Jπ = 1-1 member of the quadrupole-octupole coupled two-phonon multiplet. A second state at 7.53.5 MeV was also assigned Jπ = 1-.

AB - The linearly polarized γ-ray beam produced by the HIγS facility has been used to determine the parity of two previously known dipole excitations in 88Sr. The azimuthal asymmetry of γ rays produced in the process of nuclear resonance fluorescence indicated that the dipole state at 4.742 MeV, recently discussed as a new form of M 1 excitation, is in fact a 1- (E1) state. The 1- state at 4.742 MeV must, therefore, be reconsidered as the Jπ = 1-1 member of the quadrupole-octupole coupled two-phonon multiplet. A second state at 7.53.5 MeV was also assigned Jπ = 1-.

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U2 - 10.1103/PhysRevC.65.047305

DO - 10.1103/PhysRevC.65.047305

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JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 047305

ER -

Identification of the J^π=1^- two-phonon state of ⁸⁸Sr

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