Low-spin non-yrast states in light tungsten isotopes and the evolution of shape coexistence

T. Kibédi; G. D. Dracoulis; A. P. Byrne; P. M. Davidson

doi:10.1016/S0375-9474(00)00600-X

Low-spin non-yrast states in light tungsten isotopes and the evolution of shape coexistence

T. Kibédi^*, G. D. Dracoulis, A. P. Byrne, P. M. Davidson

^*Corresponding author for this work

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

28 Citations (Scopus)

Abstract

Excited states in ¹⁷⁰W, ¹⁷²W, ¹⁷⁴W, ¹⁷⁶W and ¹⁷⁸W have been populated in the β-decay of ^170-178Re isotopes and studied using γ-ray singles and coincidence techniques, utilising the high efficiency of a Compton-suppressed array, and conversion electron systems. Many new states at low excitation energies have been identified, complementing the level schemes previously established from in-beam studies. A large body of data on decay properties, spins and parities, and relative E2 and E0 matrix elements has been obtained. The properties of the K^π=0⁺ ("quasi"-β) and the K^π=2⁺ ("quasi"-γ) bands are compared with similar bands observed in light osmium, platinum and mercury isotopes, where shape coexistence has been established at low spin.

Original language	English
Pages (from-to)	669-715
Number of pages	47
Journal	Nuclear Physics A
Volume	688
Issue number	3-4
DOIs	https://doi.org/10.1016/S0375-9474(00)00600-X
Publication status	Published - 4 Jun 2001

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@article{f1b9cf80f0944eb69286817ae6387f43,

title = "Low-spin non-yrast states in light tungsten isotopes and the evolution of shape coexistence",

abstract = "Excited states in 170W, 172W, 174W, 176W and 178W have been populated in the β-decay of 170-178Re isotopes and studied using γ-ray singles and coincidence techniques, utilising the high efficiency of a Compton-suppressed array, and conversion electron systems. Many new states at low excitation energies have been identified, complementing the level schemes previously established from in-beam studies. A large body of data on decay properties, spins and parities, and relative E2 and E0 matrix elements has been obtained. The properties of the Kπ=0+ ({"}quasi{"}-β) and the Kπ=2+ ({"}quasi{"}-γ) bands are compared with similar bands observed in light osmium, platinum and mercury isotopes, where shape coexistence has been established at low spin.",

keywords = "RADIOACTIVITY W, Sm(P ,3 n), E=150 MeV, Sm(P ,4 n),, Sm(P ,5 n), E=150 MeV, Sm(S, p2n), E=153 MeV",

author = "T. Kib{\'e}di and Dracoulis, {G. D.} and Byrne, {A. P.} and Davidson, {P. M.}",

year = "2001",

month = jun,

day = "4",

doi = "10.1016/S0375-9474(00)00600-X",

language = "English",

volume = "688",

pages = "669--715",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3-4",

}

TY - JOUR

T1 - Low-spin non-yrast states in light tungsten isotopes and the evolution of shape coexistence

AU - Kibédi, T.

AU - Dracoulis, G. D.

AU - Byrne, A. P.

AU - Davidson, P. M.

PY - 2001/6/4

Y1 - 2001/6/4

N2 - Excited states in 170W, 172W, 174W, 176W and 178W have been populated in the β-decay of 170-178Re isotopes and studied using γ-ray singles and coincidence techniques, utilising the high efficiency of a Compton-suppressed array, and conversion electron systems. Many new states at low excitation energies have been identified, complementing the level schemes previously established from in-beam studies. A large body of data on decay properties, spins and parities, and relative E2 and E0 matrix elements has been obtained. The properties of the Kπ=0+ ("quasi"-β) and the Kπ=2+ ("quasi"-γ) bands are compared with similar bands observed in light osmium, platinum and mercury isotopes, where shape coexistence has been established at low spin.

AB - Excited states in 170W, 172W, 174W, 176W and 178W have been populated in the β-decay of 170-178Re isotopes and studied using γ-ray singles and coincidence techniques, utilising the high efficiency of a Compton-suppressed array, and conversion electron systems. Many new states at low excitation energies have been identified, complementing the level schemes previously established from in-beam studies. A large body of data on decay properties, spins and parities, and relative E2 and E0 matrix elements has been obtained. The properties of the Kπ=0+ ("quasi"-β) and the Kπ=2+ ("quasi"-γ) bands are compared with similar bands observed in light osmium, platinum and mercury isotopes, where shape coexistence has been established at low spin.

KW - RADIOACTIVITY W

KW - Sm(P ,3 n), E=150 MeV

KW - Sm(P ,4 n),

KW - Sm(P ,5 n), E=150 MeV

KW - Sm(S, p2n), E=153 MeV

UR - http://www.scopus.com/inward/record.url?scp=0035806349&partnerID=8YFLogxK

U2 - 10.1016/S0375-9474(00)00600-X

DO - 10.1016/S0375-9474(00)00600-X

M3 - Article

SN - 0375-9474

VL - 688

SP - 669

EP - 715

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 3-4

ER -

Low-spin non-yrast states in light tungsten isotopes and the evolution of shape coexistence

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