Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb-186

J. Pakarinen; R. Julin; S. Juutinen; S. Eeckhaudt; T. Grahn; P.T. Greenlees; P. Jones; H. Kettunen; M. Leino; M. Nyman; P. Rahkila; C. Scholey; J. Uusitalo; I.G. Darby; R.D. Page; V. Hellemans; K. Heyde; P.-H. Heenen; M. Bender; F. Johnston-Theasby; P.M. Raddon; R. Wadsworth; T. Enqvist; A.-P. Leppänen; P. Nieminen

doi:10.1103/PhysRevC.75.014302

Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb-186

J. Pakarinen, R. Julin, S. Juutinen, S. Eeckhaudt, T. Grahn, P.T. Greenlees, P. Jones, H. Kettunen, M. Leino, M. Nyman, P. Rahkila, C. Scholey, J. Uusitalo, I.G. Darby, R.D. Page, V. Hellemans, K. Heyde, P.-H. Heenen, M. Bender, F. Johnston-TheasbyP.M. Raddon, R. Wadsworth, T. Enqvist, A.-P. Leppänen, P. Nieminen

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

Abstract

For the first time, non-yrast structures of the neutron mid-shell nucleus Pb-186 have been identified in an in-beam gamma-ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to I-pi=20(+), revealing a similar backbend to that observed in the Pt and Hg isotones. Three new bands and several other transitions have been observed. Calculations carried out in the framework of the interacting boson model together with mean-field studies using the generator coordinate method provide arguments for the association of one of the new bands with an oblate shape. The present data also show evidence for octupole and gamma-vibrational bands.

Original language	English
Article number	014302
Pages (from-to)	-
Number of pages	18
Journal	Physical Review C
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.75.014302
Publication status	Published - Jan 2007

Bibliographical note

Keywords

INTERACTING-BOSON MODEL
DEFICIENT LEAD ISOTOPES
GAMMA-RAY SPECTROSCOPY
EVEN-EVEN NUCLEI
HIGH-SPIN STATES
SHAPE COEXISTENCE
ALPHA-DECAY
INTRUDER STATES
BAND-STRUCTURES
1ST OBSERVATION

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Pakarinen, J., Julin, R., Juutinen, S., Eeckhaudt, S., Grahn, T., Greenlees, P. T., Jones, P., Kettunen, H., Leino, M., Nyman, M., Rahkila, P., Scholey, C., Uusitalo, J., Darby, I. G., Page, R. D., Hellemans, V., Heyde, K., Heenen, P.-H., Bender, M., ... Nieminen, P. (2007). Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb-186. Physical Review C, 75(1), -. Article 014302. https://doi.org/10.1103/PhysRevC.75.014302

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abstract = "For the first time, non-yrast structures of the neutron mid-shell nucleus Pb-186 have been identified in an in-beam gamma-ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to I-pi=20(+), revealing a similar backbend to that observed in the Pt and Hg isotones. Three new bands and several other transitions have been observed. Calculations carried out in the framework of the interacting boson model together with mean-field studies using the generator coordinate method provide arguments for the association of one of the new bands with an oblate shape. The present data also show evidence for octupole and gamma-vibrational bands.",

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author = "J. Pakarinen and R. Julin and S. Juutinen and S. Eeckhaudt and T. Grahn and P.T. Greenlees and P. Jones and H. Kettunen and M. Leino and M. Nyman and P. Rahkila and C. Scholey and J. Uusitalo and I.G. Darby and R.D. Page and V. Hellemans and K. Heyde and P.-H. Heenen and M. Bender and F. Johnston-Theasby and P.M. Raddon and R. Wadsworth and T. Enqvist and A.-P. Lepp{\"a}nen and P. Nieminen",

year = "2007",

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doi = "10.1103/PhysRevC.75.014302",

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Pakarinen, J, Julin, R, Juutinen, S, Eeckhaudt, S, Grahn, T, Greenlees, PT, Jones, P, Kettunen, H, Leino, M, Nyman, M, Rahkila, P, Scholey, C, Uusitalo, J, Darby, IG, Page, RD, Hellemans, V, Heyde, K, Heenen, P-H, Bender, M, Johnston-Theasby, F, Raddon, PM, Wadsworth, R, Enqvist, T, Leppänen, A-P & Nieminen, P 2007, 'Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb-186', Physical Review C, vol. 75, no. 1, 014302, pp. -. https://doi.org/10.1103/PhysRevC.75.014302

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AU - Pakarinen, J.

AU - Julin, R.

AU - Juutinen, S.

AU - Eeckhaudt, S.

AU - Grahn, T.

AU - Greenlees, P.T.

AU - Jones, P.

AU - Kettunen, H.

AU - Leino, M.

AU - Nyman, M.

AU - Rahkila, P.

AU - Scholey, C.

AU - Uusitalo, J.

AU - Darby, I.G.

AU - Page, R.D.

AU - Hellemans, V.

AU - Heyde, K.

AU - Heenen, P.-H.

AU - Bender, M.

AU - Johnston-Theasby, F.

AU - Raddon, P.M.

AU - Wadsworth, R.

AU - Enqvist, T.

AU - Leppänen, A.-P.

AU - Nieminen, P.

PY - 2007/1

Y1 - 2007/1

N2 - For the first time, non-yrast structures of the neutron mid-shell nucleus Pb-186 have been identified in an in-beam gamma-ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to I-pi=20(+), revealing a similar backbend to that observed in the Pt and Hg isotones. Three new bands and several other transitions have been observed. Calculations carried out in the framework of the interacting boson model together with mean-field studies using the generator coordinate method provide arguments for the association of one of the new bands with an oblate shape. The present data also show evidence for octupole and gamma-vibrational bands.

AB - For the first time, non-yrast structures of the neutron mid-shell nucleus Pb-186 have been identified in an in-beam gamma-ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to I-pi=20(+), revealing a similar backbend to that observed in the Pt and Hg isotones. Three new bands and several other transitions have been observed. Calculations carried out in the framework of the interacting boson model together with mean-field studies using the generator coordinate method provide arguments for the association of one of the new bands with an oblate shape. The present data also show evidence for octupole and gamma-vibrational bands.

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KW - DEFICIENT LEAD ISOTOPES

KW - GAMMA-RAY SPECTROSCOPY

KW - EVEN-EVEN NUCLEI

KW - HIGH-SPIN STATES

KW - SHAPE COEXISTENCE

KW - ALPHA-DECAY

KW - INTRUDER STATES

KW - BAND-STRUCTURES

KW - 1ST OBSERVATION

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U2 - 10.1103/PhysRevC.75.014302

DO - 10.1103/PhysRevC.75.014302

M3 - Article

SN - 2469-9985

VL - 75

SP - -

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 014302

ER -

Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb-186

Abstract

Bibliographical note

Keywords

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