Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb186

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

doi:10.1103/PhysRevC.75.014302

Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb186

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

^*Corresponding author for this work

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Abstract

For the first time, non-yrast structures of the neutron mid-shell nucleus Pb186 have been identified in an in-beam I -ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to IÏ€=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 I -vibrational bands.

Original language	English
Article number	014302
Journal	Physical Review C - Nuclear Physics
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.75.014302
Publication status	Published - 2007

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Pakarinen, J., Hellemans, V., Julin, R., Juutinen, S., Heyde, K., Heenen, P. H., Bender, M., Darby, I. G., Eeckhaudt, S., Enqvist, T., Grahn, T., Greenlees, P. T., Johnston-Theasby, F., Jones, P., Kettunen, H., Leino, M., Leppänen, A. P., Nieminen, P., Nyman, M., ... Wadsworth, R. (2007). Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb186. Physical Review C - Nuclear Physics, 75(1), Article 014302. https://doi.org/10.1103/PhysRevC.75.014302

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title = "Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb186",

abstract = "For the first time, non-yrast structures of the neutron mid-shell nucleus Pb186 have been identified in an in-beam I -ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to I{\"I}€=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 I -vibrational bands.",

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

year = "2007",

doi = "10.1103/PhysRevC.75.014302",

language = "English",

volume = "75",

journal = "Physical Review C - Nuclear Physics",

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Pakarinen, J, Hellemans, V, Julin, R, Juutinen, S, Heyde, K, Heenen, PH, Bender, M, Darby, IG, Eeckhaudt, S, Enqvist, T, Grahn, T, Greenlees, PT, Johnston-Theasby, F, Jones, P, Kettunen, H, Leino, M, Leppänen, AP, Nieminen, P, Nyman, M, Page, RD, Raddon, PM, Rahkila, P, Scholey, C, Uusitalo, J & Wadsworth, R 2007, 'Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb186', Physical Review C - Nuclear Physics, vol. 75, no. 1, 014302. https://doi.org/10.1103/PhysRevC.75.014302

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AU - Pakarinen, J.

AU - Hellemans, V.

AU - Julin, R.

AU - Juutinen, S.

AU - Heyde, K.

AU - Heenen, P. H.

AU - Bender, M.

AU - Darby, I. G.

AU - Eeckhaudt, S.

AU - Enqvist, T.

AU - Grahn, T.

AU - Greenlees, P. T.

AU - Johnston-Theasby, F.

AU - Jones, P.

AU - Kettunen, H.

AU - Leino, M.

AU - Leppänen, A. P.

AU - Nieminen, P.

AU - Nyman, M.

AU - Page, R. D.

AU - Raddon, P. M.

AU - Rahkila, P.

AU - Scholey, C.

AU - Uusitalo, J.

AU - Wadsworth, R.

PY - 2007

Y1 - 2007

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AB - For the first time, non-yrast structures of the neutron mid-shell nucleus Pb186 have been identified in an in-beam I -ray spectroscopy measurement using the recoil-decay tagging technique. The yrast band has been tentatively extended up to IÏ€=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 I -vibrational bands.

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VL - 75

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 1

M1 - 014302

ER -

Investigation of nuclear collectivity in the neutron mid-shell nucleus Pb186

Abstract

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