Quasiparticle alignments and alpha-decay fine structure of Pt-175

P. Peura; C. Scholey; D.T. Joss; S. Juutinen; R. Julin; T. Back; B. Cederwall; P.T. Greenlees; U. Jakobsson; P. Jones; D. S. Judson; S. Ketelhut; M. Labiche; M. Leino; M. Nyman; D. O'Donnell; R.D. Page; P. Rahkila; P. Ruotsalainen; M. Sandzelius; P.J. Sapple; J. Saren; J. Simpson; J. Thomson; J. Uusitalo; H.V. Watkins

doi:10.1103/PhysRevC.89.024316

Quasiparticle alignments and alpha-decay fine structure of Pt-175

P. Peura, C. Scholey, D.T. Joss, S. Juutinen, R. Julin, T. Back, B. Cederwall, P.T. Greenlees, U. Jakobsson, P. Jones, D. S. Judson, S. Ketelhut, M. Labiche, M. Leino, M. Nyman, D. O'Donnell, R.D. Page, P. Rahkila, P. Ruotsalainen, M. SandzeliusP.J. Sapple, J. Saren, J. Simpson, J. Thomson, J. Uusitalo, H.V. Watkins

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Abstract

Excited states and decay properties of 175Pt have been investigated using the 92Mo(86Sr,2pn) fusion-evaporation reaction. The JUROGAM I γ-ray spectrometer and the GREAT spectrometer were used in conjunction with the gas-filled recoil separator RITU for the measurement of the radiation at the target and focal plane positions, respectively. Two new band structures, assigned to be based on the Iπ=(7/2−) ground state in 175Pt, have been established and the known yrast band has been extended up to Iπ=(49/2+). Rotational properties of the excited states in 175Pt have been investigated within the cranked shell-model formalism. The low-frequency changes in the alignments of the positive- and negative-parity bands are interpreted as a sign of proton-pair excitations in the rotating core. Furthermore, the α-decay measurements reveal a candidate for a fourth
α-decay branch in 175Pt, feeding a non-yrast state in 171Os.

Original language	English
Article number	024316
Number of pages	12
Journal	Physical Review C
Volume	89
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.89.024316
Publication status	Published - 24 Feb 2014
Externally published	Yes

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Peura, P., Scholey, C., Joss, D. T., Juutinen, S., Julin, R., Back, T., Cederwall, B., Greenlees, P. T., Jakobsson, U., Jones, P., Judson, D. S., Ketelhut, S., Labiche, M., Leino, M., Nyman, M., O'Donnell, D., Page, R. D., Rahkila, P., Ruotsalainen, P., ... Watkins, H. V. (2014). Quasiparticle alignments and alpha-decay fine structure of Pt-175. Physical Review C, 89(2), Article 024316. https://doi.org/10.1103/PhysRevC.89.024316

@article{59bc6d2edad24b44916e0fa9995a53f8,

title = "Quasiparticle alignments and alpha-decay fine structure of Pt-175",

abstract = "Excited states and decay properties of 175Pt have been investigated using the 92Mo(86Sr,2pn) fusion-evaporation reaction. The JUROGAM I γ-ray spectrometer and the GREAT spectrometer were used in conjunction with the gas-filled recoil separator RITU for the measurement of the radiation at the target and focal plane positions, respectively. Two new band structures, assigned to be based on the Iπ=(7/2−) ground state in 175Pt, have been established and the known yrast band has been extended up to Iπ=(49/2+). Rotational properties of the excited states in 175Pt have been investigated within the cranked shell-model formalism. The low-frequency changes in the alignments of the positive- and negative-parity bands are interpreted as a sign of proton-pair excitations in the rotating core. Furthermore, the α-decay measurements reveal a candidate for a fourth α-decay branch in 175Pt, feeding a non-yrast state in 171Os.",

author = "P. Peura and C. Scholey and D.T. Joss and S. Juutinen and R. Julin and T. Back and B. Cederwall and P.T. Greenlees and U. Jakobsson and P. Jones and Judson, \{D. S.\} and S. Ketelhut and M. Labiche and M. Leino and M. Nyman and D. O'Donnell and R.D. Page and P. Rahkila and P. Ruotsalainen and M. Sandzelius and P.J. Sapple and J. Saren and J. Simpson and J. Thomson and J. Uusitalo and H.V. Watkins",

year = "2014",

month = feb,

day = "24",

doi = "10.1103/PhysRevC.89.024316",

language = "English",

volume = "89",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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Peura, P, Scholey, C, Joss, DT, Juutinen, S, Julin, R, Back, T, Cederwall, B, Greenlees, PT, Jakobsson, U, Jones, P, Judson, DS, Ketelhut, S, Labiche, M, Leino, M, Nyman, M, O'Donnell, D, Page, RD, Rahkila, P, Ruotsalainen, P, Sandzelius, M, Sapple, PJ, Saren, J, Simpson, J, Thomson, J, Uusitalo, J & Watkins, HV 2014, 'Quasiparticle alignments and alpha-decay fine structure of Pt-175', Physical Review C, vol. 89, no. 2, 024316. https://doi.org/10.1103/PhysRevC.89.024316

TY - JOUR

T1 - Quasiparticle alignments and alpha-decay fine structure of Pt-175

AU - Peura, P.

AU - Scholey, C.

AU - Joss, D.T.

AU - Juutinen, S.

AU - Julin, R.

AU - Back, T.

AU - Cederwall, B.

AU - Greenlees, P.T.

AU - Jakobsson, U.

AU - Jones, P.

AU - Judson, D. S.

AU - Ketelhut, S.

AU - Labiche, M.

AU - Leino, M.

AU - Nyman, M.

AU - O'Donnell, D.

AU - Page, R.D.

AU - Rahkila, P.

AU - Ruotsalainen, P.

AU - Sandzelius, M.

AU - Sapple, P.J.

AU - Saren, J.

AU - Simpson, J.

AU - Thomson, J.

AU - Uusitalo, J.

AU - Watkins, H.V.

PY - 2014/2/24

Y1 - 2014/2/24

N2 - Excited states and decay properties of 175Pt have been investigated using the 92Mo(86Sr,2pn) fusion-evaporation reaction. The JUROGAM I γ-ray spectrometer and the GREAT spectrometer were used in conjunction with the gas-filled recoil separator RITU for the measurement of the radiation at the target and focal plane positions, respectively. Two new band structures, assigned to be based on the Iπ=(7/2−) ground state in 175Pt, have been established and the known yrast band has been extended up to Iπ=(49/2+). Rotational properties of the excited states in 175Pt have been investigated within the cranked shell-model formalism. The low-frequency changes in the alignments of the positive- and negative-parity bands are interpreted as a sign of proton-pair excitations in the rotating core. Furthermore, the α-decay measurements reveal a candidate for a fourth α-decay branch in 175Pt, feeding a non-yrast state in 171Os.

AB - Excited states and decay properties of 175Pt have been investigated using the 92Mo(86Sr,2pn) fusion-evaporation reaction. The JUROGAM I γ-ray spectrometer and the GREAT spectrometer were used in conjunction with the gas-filled recoil separator RITU for the measurement of the radiation at the target and focal plane positions, respectively. Two new band structures, assigned to be based on the Iπ=(7/2−) ground state in 175Pt, have been established and the known yrast band has been extended up to Iπ=(49/2+). Rotational properties of the excited states in 175Pt have been investigated within the cranked shell-model formalism. The low-frequency changes in the alignments of the positive- and negative-parity bands are interpreted as a sign of proton-pair excitations in the rotating core. Furthermore, the α-decay measurements reveal a candidate for a fourth α-decay branch in 175Pt, feeding a non-yrast state in 171Os.

U2 - 10.1103/PhysRevC.89.024316

DO - 10.1103/PhysRevC.89.024316

M3 - Article

SN - 2469-9985

VL - 89

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024316

ER -

Quasiparticle alignments and alpha-decay fine structure of Pt-175

Abstract

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