E5 decay from the Jπ=11/2- isomer in Ba 137

K. Moran; E. A. McCutchan; C. J. Lister; S. Zhu; M. P. Carpenter; P. Chowdhury; J. P. Greene; T. Lauritsen; E. Merchan; R. Shearman

doi:10.1103/PhysRevC.90.041303

E5 decay from the Jπ=11/2- isomer in Ba 137

K. Moran
, E. A. McCutchan
, C. J. Lister
, S. Zhu
, M. P. Carpenter
, P. Chowdhury
, J. P. Greene
, T. Lauritsen
, E. Merchan
, R. Shearman

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A new γ-decay branch has been found from the well-known 661.659(3)-keV Jπ=11/2-, T1/2=2.552(1) min isomer in Ba137 which is populated in the β decay of Cs137. The new 377.9(3)-keV γ ray connects the isomer to the low-lying 283.5 keV, Jπ=1/2- state. It is of near-pure E5 character. The decay has a γ branching ratio (Brγ=Γγ/Γtot) of 1.12(9)×10-7. The new decay has a B(E5) of 0.71(6) W.u. [B(E5)↓=6.5(6)×105e2fm10], a value consistent with other "single-particle" E5 decays in the region. The new decay branch is of topical interest, as it competes with the much-sought "two-photon" second-order electromagnetic decay from this state.

Original language	English (US)
Article number	041303
Journal	Physical Review C - Nuclear Physics
Volume	90
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.90.041303
State	Published - Oct 28 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.90.041303

Cite this

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title = "E5 decay from the Jπ=11/2- isomer in Ba 137",

abstract = "A new γ-decay branch has been found from the well-known 661.659(3)-keV Jπ=11/2-, T1/2=2.552(1) min isomer in Ba137 which is populated in the β decay of Cs137. The new 377.9(3)-keV γ ray connects the isomer to the low-lying 283.5 keV, Jπ=1/2- state. It is of near-pure E5 character. The decay has a γ branching ratio (Brγ=Γγ/Γtot) of 1.12(9)×10-7. The new decay has a B(E5) of 0.71(6) W.u. [B(E5)↓=6.5(6)×105e2fm10], a value consistent with other {"}single-particle{"} E5 decays in the region. The new decay branch is of topical interest, as it competes with the much-sought {"}two-photon{"} second-order electromagnetic decay from this state.",

author = "K. Moran and McCutchan, \{E. A.\} and Lister, \{C. J.\} and S. Zhu and Carpenter, \{M. P.\} and P. Chowdhury and Greene, \{J. P.\} and T. Lauritsen and E. Merchan and R. Shearman",

note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society.",

year = "2014",

month = oct,

day = "28",

doi = "10.1103/PhysRevC.90.041303",

language = "English (US)",

volume = "90",

journal = "Physical Review C - Nuclear Physics",

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T1 - E5 decay from the Jπ=11/2- isomer in Ba 137

AU - Moran, K.

AU - McCutchan, E. A.

AU - Lister, C. J.

AU - Zhu, S.

AU - Carpenter, M. P.

AU - Chowdhury, P.

AU - Greene, J. P.

AU - Lauritsen, T.

AU - Merchan, E.

AU - Shearman, R.

PY - 2014/10/28

Y1 - 2014/10/28

N2 - A new γ-decay branch has been found from the well-known 661.659(3)-keV Jπ=11/2-, T1/2=2.552(1) min isomer in Ba137 which is populated in the β decay of Cs137. The new 377.9(3)-keV γ ray connects the isomer to the low-lying 283.5 keV, Jπ=1/2- state. It is of near-pure E5 character. The decay has a γ branching ratio (Brγ=Γγ/Γtot) of 1.12(9)×10-7. The new decay has a B(E5) of 0.71(6) W.u. [B(E5)↓=6.5(6)×105e2fm10], a value consistent with other "single-particle" E5 decays in the region. The new decay branch is of topical interest, as it competes with the much-sought "two-photon" second-order electromagnetic decay from this state.

AB - A new γ-decay branch has been found from the well-known 661.659(3)-keV Jπ=11/2-, T1/2=2.552(1) min isomer in Ba137 which is populated in the β decay of Cs137. The new 377.9(3)-keV γ ray connects the isomer to the low-lying 283.5 keV, Jπ=1/2- state. It is of near-pure E5 character. The decay has a γ branching ratio (Brγ=Γγ/Γtot) of 1.12(9)×10-7. The new decay has a B(E5) of 0.71(6) W.u. [B(E5)↓=6.5(6)×105e2fm10], a value consistent with other "single-particle" E5 decays in the region. The new decay branch is of topical interest, as it competes with the much-sought "two-photon" second-order electromagnetic decay from this state.

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UR - https://www.scopus.com/pages/publications/84908403302#tab=citedBy

U2 - 10.1103/PhysRevC.90.041303

DO - 10.1103/PhysRevC.90.041303

M3 - Article

AN - SCOPUS:84908403302

SN - 0556-2813

VL - 90

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 041303

ER -

E5 decay from the Jπ=11/2- isomer in Ba 137

Abstract

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