First observation of mixed-symmetry states in a good U(5) nucleus

P. E. Garrett; H. Lehmann; C. A. McGrath; Minfang Yeh; S. W. Yates

doi:10.1103/PhysRevC.54.2259

First observation of mixed-symmetry states in a good U(5) nucleus

P. E. Garrett, H. Lehmann, C. A. McGrath, Minfang Yeh, S. W. Yates

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Abstract

The properties of 2⁺ states at 2156 keV and 2231 keV in ¹¹²Cd have been measured using the (n,n ′ γ) reaction. These states have strong decay branches, determined to be almost pure M1, to the 2₁⁺+* level with B(M1) values of 0.044(5) μ²_N and 0.055(5) μ²_N respectively, and are interpreted as the main fragments of the 2⁺ mixed-symmetry state, the vibrational analogue of the "scissors-mode" state in deformed nuclei. These observations provide the first firm evidence of mixed-symmetry states in a good U(5) nucleus.

Original language	English
Pages (from-to)	2259-2263
Number of pages	5
Journal	Physical Review C - Nuclear Physics
Volume	54
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.54.2259
State	Published - Nov 1996

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.54.2259

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title = "First observation of mixed-symmetry states in a good U(5) nucleus",

abstract = "The properties of 2+ states at 2156 keV and 2231 keV in 112Cd have been measured using the (n,n ′ γ) reaction. These states have strong decay branches, determined to be almost pure M1, to the 21++* level with B(M1) values of 0.044(5) μ2N and 0.055(5) μ2N respectively, and are interpreted as the main fragments of the 2+ mixed-symmetry state, the vibrational analogue of the {"}scissors-mode{"} state in deformed nuclei. These observations provide the first firm evidence of mixed-symmetry states in a good U(5) nucleus.",

author = "Garrett, {P. E.} and H. Lehmann and McGrath, {C. A.} and Minfang Yeh and Yates, {S. W.}",

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AU - Garrett, P. E.

AU - Lehmann, H.

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AU - Yeh, Minfang

AU - Yates, S. W.

PY - 1996/11

Y1 - 1996/11

N2 - The properties of 2+ states at 2156 keV and 2231 keV in 112Cd have been measured using the (n,n ′ γ) reaction. These states have strong decay branches, determined to be almost pure M1, to the 21++* level with B(M1) values of 0.044(5) μ2N and 0.055(5) μ2N respectively, and are interpreted as the main fragments of the 2+ mixed-symmetry state, the vibrational analogue of the "scissors-mode" state in deformed nuclei. These observations provide the first firm evidence of mixed-symmetry states in a good U(5) nucleus.

AB - The properties of 2+ states at 2156 keV and 2231 keV in 112Cd have been measured using the (n,n ′ γ) reaction. These states have strong decay branches, determined to be almost pure M1, to the 21++* level with B(M1) values of 0.044(5) μ2N and 0.055(5) μ2N respectively, and are interpreted as the main fragments of the 2+ mixed-symmetry state, the vibrational analogue of the "scissors-mode" state in deformed nuclei. These observations provide the first firm evidence of mixed-symmetry states in a good U(5) nucleus.

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First observation of mixed-symmetry states in a good U(5) nucleus

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