Collective and intrinsic structures in 183W

T. R. Saitoh; N. Saitoh-Hashimoto; G. Sletten; R. A. Bark; M. Bergström; P. Regan; S. Törmänen; P. G. Varmette; P. M. Walker; C. Wheldon

doi:10.1016/S0375-9474(99)00381-4

Collective and intrinsic structures in ¹⁸³W

T. R. Saitoh^*, N. Saitoh-Hashimoto, G. Sletten, R. A. Bark, M. Bergström, P. Regan, S. Törmänen, P. G. Varmette, P. M. Walker, C. Wheldon

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

The structure of ¹⁸³W has been studied by employing the ¹⁷⁶Yb(¹⁴C, α 3n) reaction at 68 MeV. Five previously known rotational structure with one-quasiparticle configurations have been extended to higher spin states, and five new rotational bands with three- and five-quasiparticle configurations and a γ-vibration of a one-quasiparticle structure have been newly identified. In the ν7/2^-[503] and ν11/2⁺ [615] rotational structures, a signal of an admixture of an octupole-vibrational structure has been observed in their in-band B(M1)/B(E2) ratios and g_K factors. In the K^π = 19^- rotational band, a Coriolis effect on the ν1/2^-[510] neutron has been identified. In all, 17 K-forbidden transitions have been observed. Energies of intrinsic states below 4 MeV have been calculated based on the Blocked BCS theory, and they are used in support of the configuration assignments.

Original language	English
Pages (from-to)	171-196
Number of pages	26
Journal	Nuclear Physics A
Volume	660
Issue number	2
DOIs	https://doi.org/10.1016/S0375-9474(99)00381-4
Publication status	Published - 22 Nov 1999
Externally published	Yes

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title = "Collective and intrinsic structures in 183W",

abstract = "The structure of 183W has been studied by employing the 176Yb(14C, α 3n) reaction at 68 MeV. Five previously known rotational structure with one-quasiparticle configurations have been extended to higher spin states, and five new rotational bands with three- and five-quasiparticle configurations and a γ-vibration of a one-quasiparticle structure have been newly identified. In the ν7/2-[503] and ν11/2+ [615] rotational structures, a signal of an admixture of an octupole-vibrational structure has been observed in their in-band B(M1)/B(E2) ratios and gK factors. In the Kπ = 19- rotational band, a Coriolis effect on the ν1/2-[510] neutron has been identified. In all, 17 K-forbidden transitions have been observed. Energies of intrinsic states below 4 MeV have been calculated based on the Blocked BCS theory, and they are used in support of the configuration assignments.",

keywords = "Measured γ-γ coincidences, DCO ratios, α-γ coincidences, Nuclear reaction Yb(C, α 3n)W E = 68 MeV, slow beam pulsing",

author = "Saitoh, {T. R.} and N. Saitoh-Hashimoto and G. Sletten and Bark, {R. A.} and M. Bergstr{\"o}m and P. Regan and S. T{\"o}rm{\"a}nen and Varmette, {P. G.} and Walker, {P. M.} and C. Wheldon",

year = "1999",

month = nov,

day = "22",

doi = "10.1016/S0375-9474(99)00381-4",

language = "English",

volume = "660",

pages = "171--196",

journal = "Nuclear Physics A",

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T1 - Collective and intrinsic structures in 183W

AU - Saitoh, T. R.

AU - Saitoh-Hashimoto, N.

AU - Sletten, G.

AU - Bark, R. A.

AU - Bergström, M.

AU - Regan, P.

AU - Törmänen, S.

AU - Varmette, P. G.

AU - Walker, P. M.

AU - Wheldon, C.

PY - 1999/11/22

Y1 - 1999/11/22

N2 - The structure of 183W has been studied by employing the 176Yb(14C, α 3n) reaction at 68 MeV. Five previously known rotational structure with one-quasiparticle configurations have been extended to higher spin states, and five new rotational bands with three- and five-quasiparticle configurations and a γ-vibration of a one-quasiparticle structure have been newly identified. In the ν7/2-[503] and ν11/2+ [615] rotational structures, a signal of an admixture of an octupole-vibrational structure has been observed in their in-band B(M1)/B(E2) ratios and gK factors. In the Kπ = 19- rotational band, a Coriolis effect on the ν1/2-[510] neutron has been identified. In all, 17 K-forbidden transitions have been observed. Energies of intrinsic states below 4 MeV have been calculated based on the Blocked BCS theory, and they are used in support of the configuration assignments.

AB - The structure of 183W has been studied by employing the 176Yb(14C, α 3n) reaction at 68 MeV. Five previously known rotational structure with one-quasiparticle configurations have been extended to higher spin states, and five new rotational bands with three- and five-quasiparticle configurations and a γ-vibration of a one-quasiparticle structure have been newly identified. In the ν7/2-[503] and ν11/2+ [615] rotational structures, a signal of an admixture of an octupole-vibrational structure has been observed in their in-band B(M1)/B(E2) ratios and gK factors. In the Kπ = 19- rotational band, a Coriolis effect on the ν1/2-[510] neutron has been identified. In all, 17 K-forbidden transitions have been observed. Energies of intrinsic states below 4 MeV have been calculated based on the Blocked BCS theory, and they are used in support of the configuration assignments.

KW - Measured γ-γ coincidences, DCO ratios, α-γ coincidences

KW - Nuclear reaction Yb(C, α 3n)W E = 68 MeV, slow beam pulsing

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U2 - 10.1016/S0375-9474(99)00381-4

DO - 10.1016/S0375-9474(99)00381-4

M3 - Article

SN - 0375-9474

VL - 660

SP - 171

EP - 196

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 2

ER -

Collective and intrinsic structures in ¹⁸³W

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