Multiquasiparticle states in the neutron-rich nucleus 174Tm

R. O. Hughes; G. J. Lane; G. D. Dracoulis; A. P. Byrne; P. Nieminen; H. Watanabe; M. P. Carpenter; P. Chowdhury; R. V.F. Janssens; F. G. Kondev; T. Lauritsen; D. Seweryniak; S. Zhu

doi:10.1103/PhysRevC.88.014311

Multiquasiparticle states in the neutron-rich nucleus 174Tm

R. O. Hughes^*, G. J. Lane, G. D. Dracoulis, A. P. Byrne, P. Nieminen, H. Watanabe, M. P. Carpenter, P. Chowdhury, R. V.F. Janssens, F. G. Kondev, T. Lauritsen, D. Seweryniak, S. Zhu

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

Deep inelastic and transfer reactions with an 820-MeV, 136Xe beam and various ytterbium and lutetium targets have been employed to study high-spin structures in the neutron-rich thulium isotopes beyond 171Tm. Results in the doubly odd nucleus, 174Tm, include the identification of numerous new two- and four-quasiparticle intrinsic states including several isomers below 1 MeV, and the observation of the Kπ=4^- ground state rotational band populated via direct decay from a τ=153(10)-μs, Kπ=14^- isomer at 2092 keV. The 398-keV, M1 transition linking the isomer and ground state band is abnormally fast for a highly forbidden, ΔK=10 decay. This relative enhancement is explained in terms of mixing of the 13^- level with the nearby 13^- member of a Kπ=8^- rotational band, with an interaction strength of V ≈ 1.4 keV. Multiquasiparticle calculations are compared with the observed states.

Original language	English
Article number	014311
Journal	Physical Review C - Nuclear Physics
Volume	88
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.88.014311
Publication status	Published - 16 Jul 2013

Access to Document

10.1103/PhysRevC.88.014311

Cite this

@article{b58f8c9e080b447e89f4cc128635e832,

title = "Multiquasiparticle states in the neutron-rich nucleus 174Tm",

abstract = "Deep inelastic and transfer reactions with an 820-MeV, 136Xe beam and various ytterbium and lutetium targets have been employed to study high-spin structures in the neutron-rich thulium isotopes beyond 171Tm. Results in the doubly odd nucleus, 174Tm, include the identification of numerous new two- and four-quasiparticle intrinsic states including several isomers below 1 MeV, and the observation of the Kπ=4- ground state rotational band populated via direct decay from a τ=153(10)-μs, Kπ=14- isomer at 2092 keV. The 398-keV, M1 transition linking the isomer and ground state band is abnormally fast for a highly forbidden, ΔK=10 decay. This relative enhancement is explained in terms of mixing of the 13- level with the nearby 13- member of a Kπ=8- rotational band, with an interaction strength of V ≈ 1.4 keV. Multiquasiparticle calculations are compared with the observed states.",

author = "Hughes, {R. O.} and Lane, {G. J.} and Dracoulis, {G. D.} and Byrne, {A. P.} and P. Nieminen and H. Watanabe and Carpenter, {M. P.} and P. Chowdhury and Janssens, {R. V.F.} and Kondev, {F. G.} and T. Lauritsen and D. Seweryniak and S. Zhu",

year = "2013",

month = jul,

day = "16",

doi = "10.1103/PhysRevC.88.014311",

language = "English",

volume = "88",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Multiquasiparticle states in the neutron-rich nucleus 174Tm

AU - Hughes, R. O.

AU - Lane, G. J.

AU - Dracoulis, G. D.

AU - Byrne, A. P.

AU - Nieminen, P.

AU - Watanabe, H.

AU - Carpenter, M. P.

AU - Chowdhury, P.

AU - Janssens, R. V.F.

AU - Kondev, F. G.

AU - Lauritsen, T.

AU - Seweryniak, D.

AU - Zhu, S.

PY - 2013/7/16

Y1 - 2013/7/16

N2 - Deep inelastic and transfer reactions with an 820-MeV, 136Xe beam and various ytterbium and lutetium targets have been employed to study high-spin structures in the neutron-rich thulium isotopes beyond 171Tm. Results in the doubly odd nucleus, 174Tm, include the identification of numerous new two- and four-quasiparticle intrinsic states including several isomers below 1 MeV, and the observation of the Kπ=4- ground state rotational band populated via direct decay from a τ=153(10)-μs, Kπ=14- isomer at 2092 keV. The 398-keV, M1 transition linking the isomer and ground state band is abnormally fast for a highly forbidden, ΔK=10 decay. This relative enhancement is explained in terms of mixing of the 13- level with the nearby 13- member of a Kπ=8- rotational band, with an interaction strength of V ≈ 1.4 keV. Multiquasiparticle calculations are compared with the observed states.

AB - Deep inelastic and transfer reactions with an 820-MeV, 136Xe beam and various ytterbium and lutetium targets have been employed to study high-spin structures in the neutron-rich thulium isotopes beyond 171Tm. Results in the doubly odd nucleus, 174Tm, include the identification of numerous new two- and four-quasiparticle intrinsic states including several isomers below 1 MeV, and the observation of the Kπ=4- ground state rotational band populated via direct decay from a τ=153(10)-μs, Kπ=14- isomer at 2092 keV. The 398-keV, M1 transition linking the isomer and ground state band is abnormally fast for a highly forbidden, ΔK=10 decay. This relative enhancement is explained in terms of mixing of the 13- level with the nearby 13- member of a Kπ=8- rotational band, with an interaction strength of V ≈ 1.4 keV. Multiquasiparticle calculations are compared with the observed states.

UR - http://www.scopus.com/inward/record.url?scp=84881128617&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.88.014311

DO - 10.1103/PhysRevC.88.014311

M3 - Article

SN - 0556-2813

VL - 88

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 1

M1 - 014311

ER -

Multiquasiparticle states in the neutron-rich nucleus 174Tm

Abstract

Access to Document

Other files and links

Fingerprint

Cite this