alpha decay of the pi h(11/2) isomer in Ir-164

M.C. Drummond; D. O'Donnell; R.D. Page; D.T. Joss; L. Capponi; D.M. Cox; I.G. Darby; L. Donosa; F. Filmer; T. Grahn; P.T. Greenlees; K. Hauschild; A. Herzan; U. Jakobsson; P.M. Jones; R. Julin; S. Juutinen; S. Ketelhut; M. Leino; A. Lopez-Martens; A.K. Mistry; P. Nieminen; P. Peura; P. Rahkila; S. Rinta-Antila; P. Ruotsalainen; M. Sandzelius; J. Saren; B. Saygi; C. Scholey; J. Simpson; J. Sorri; A. Thornthwaite; J. Uusitalo

doi:10.1103/PhysRevC.89.064309

alpha decay of the pi h(11/2) isomer in Ir-164

M.C. Drummond, D. O'Donnell, R.D. Page, D.T. Joss, L. Capponi, D.M. Cox, I.G. Darby, L. Donosa, F. Filmer, T. Grahn, P.T. Greenlees, K. Hauschild, A. Herzan, U. Jakobsson, P.M. Jones, R. Julin, S. Juutinen, S. Ketelhut, M. Leino, A. Lopez-MartensA.K. Mistry, P. Nieminen, P. Peura, P. Rahkila, S. Rinta-Antila, P. Ruotsalainen, M. Sandzelius, J. Saren, B. Saygi, C. Scholey, J. Simpson, J. Sorri, A. Thornthwaite, J. Uusitalo

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Abstract

The α-decay branch of the πh11/2 isomer in Ir164 has been identified using the GREAT spectrometer. The Ir164 nuclei were produced using the 92Mo(78Kr,p5n)164Ir reaction and separated in flight using the recoil ion transport unit (RITU) gas-filled separator. The measured α-decay energy of 6880±10 keV allowed the excitation of the πh11/2 state in Re160 to be deduced as 166±14 keV. The half-life of Ir164 was measured with improved precision to be 70±10μ s and an α-decay branching ratio of 4±2% was determined. Improved half-life and branching ratio measurements were also obtained for Ir165, but no evidence was found for the ground-state decays of either Ir164 or Ir165.

Original language	English
Article number	064309
Journal	Physical Review C
Volume	89
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.89.064309
Publication status	Published - 16 Jun 2014
Externally published	Yes

Keywords

neutron-deficient isotopes
total data readout
proton dripline
nuclear structure
emission
tungsten
osmium
energy
model
ritu

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Drummond, M. C., O'Donnell, D., Page, R. D., Joss, D. T., Capponi, L., Cox, D. M., Darby, I. G., Donosa, L., Filmer, F., Grahn, T., Greenlees, P. T., Hauschild, K., Herzan, A., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., ... Uusitalo, J. (2014). alpha decay of the pi h(11/2) isomer in Ir-164. Physical Review C, 89(6), Article 064309. https://doi.org/10.1103/PhysRevC.89.064309

@article{d29b8ca152e048cdb8b641b4f74c4a3b,

title = "alpha decay of the pi h(11/2) isomer in Ir-164",

abstract = "The α-decay branch of the πh11/2 isomer in Ir164 has been identified using the GREAT spectrometer. The Ir164 nuclei were produced using the 92Mo(78Kr,p5n)164Ir reaction and separated in flight using the recoil ion transport unit (RITU) gas-filled separator. The measured α-decay energy of 6880±10 keV allowed the excitation of the πh11/2 state in Re160 to be deduced as 166±14 keV. The half-life of Ir164 was measured with improved precision to be 70±10μ s and an α-decay branching ratio of 4±2% was determined. Improved half-life and branching ratio measurements were also obtained for Ir165, but no evidence was found for the ground-state decays of either Ir164 or Ir165.",

keywords = "neutron-deficient isotopes, total data readout, proton dripline, nuclear structure, emission, tungsten, osmium, energy, model, ritu",

author = "M.C. Drummond and D. O'Donnell and R.D. Page and D.T. Joss and L. Capponi and D.M. Cox and I.G. Darby and L. Donosa and F. Filmer and T. Grahn and P.T. Greenlees and K. Hauschild and A. Herzan and U. Jakobsson and P.M. Jones and R. Julin and S. Juutinen and S. Ketelhut and M. Leino and A. Lopez-Martens and A.K. Mistry and P. Nieminen and P. Peura and P. Rahkila and S. Rinta-Antila and P. Ruotsalainen and M. Sandzelius and J. Saren and B. Saygi and C. Scholey and J. Simpson and J. Sorri and A. Thornthwaite and J. Uusitalo",

year = "2014",

month = jun,

day = "16",

doi = "10.1103/PhysRevC.89.064309",

language = "English",

volume = "89",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

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Drummond, MC, O'Donnell, D, Page, RD, Joss, DT, Capponi, L, Cox, DM, Darby, IG, Donosa, L, Filmer, F, Grahn, T, Greenlees, PT, Hauschild, K, Herzan, A, Jakobsson, U, Jones, PM, Julin, R, Juutinen, S, Ketelhut, S, Leino, M, Lopez-Martens, A, Mistry, AK, Nieminen, P, Peura, P, Rahkila, P, Rinta-Antila, S, Ruotsalainen, P, Sandzelius, M, Saren, J, Saygi, B, Scholey, C, Simpson, J, Sorri, J, Thornthwaite, A & Uusitalo, J 2014, 'alpha decay of the pi h(11/2) isomer in Ir-164', Physical Review C, vol. 89, no. 6, 064309. https://doi.org/10.1103/PhysRevC.89.064309

TY - JOUR

T1 - alpha decay of the pi h(11/2) isomer in Ir-164

AU - Drummond, M.C.

AU - O'Donnell, D.

AU - Page, R.D.

AU - Joss, D.T.

AU - Capponi, L.

AU - Cox, D.M.

AU - Darby, I.G.

AU - Donosa, L.

AU - Filmer, F.

AU - Grahn, T.

AU - Greenlees, P.T.

AU - Hauschild, K.

AU - Herzan, A.

AU - Jakobsson, U.

AU - Jones, P.M.

AU - Julin, R.

AU - Juutinen, S.

AU - Ketelhut, S.

AU - Leino, M.

AU - Lopez-Martens, A.

AU - Mistry, A.K.

AU - Nieminen, P.

AU - Peura, P.

AU - Rahkila, P.

AU - Rinta-Antila, S.

AU - Ruotsalainen, P.

AU - Sandzelius, M.

AU - Saren, J.

AU - Saygi, B.

AU - Scholey, C.

AU - Simpson, J.

AU - Sorri, J.

AU - Thornthwaite, A.

AU - Uusitalo, J.

PY - 2014/6/16

Y1 - 2014/6/16

N2 - The α-decay branch of the πh11/2 isomer in Ir164 has been identified using the GREAT spectrometer. The Ir164 nuclei were produced using the 92Mo(78Kr,p5n)164Ir reaction and separated in flight using the recoil ion transport unit (RITU) gas-filled separator. The measured α-decay energy of 6880±10 keV allowed the excitation of the πh11/2 state in Re160 to be deduced as 166±14 keV. The half-life of Ir164 was measured with improved precision to be 70±10μ s and an α-decay branching ratio of 4±2% was determined. Improved half-life and branching ratio measurements were also obtained for Ir165, but no evidence was found for the ground-state decays of either Ir164 or Ir165.

AB - The α-decay branch of the πh11/2 isomer in Ir164 has been identified using the GREAT spectrometer. The Ir164 nuclei were produced using the 92Mo(78Kr,p5n)164Ir reaction and separated in flight using the recoil ion transport unit (RITU) gas-filled separator. The measured α-decay energy of 6880±10 keV allowed the excitation of the πh11/2 state in Re160 to be deduced as 166±14 keV. The half-life of Ir164 was measured with improved precision to be 70±10μ s and an α-decay branching ratio of 4±2% was determined. Improved half-life and branching ratio measurements were also obtained for Ir165, but no evidence was found for the ground-state decays of either Ir164 or Ir165.

KW - neutron-deficient isotopes

KW - total data readout

KW - proton dripline

KW - nuclear structure

KW - emission

KW - tungsten

KW - osmium

KW - energy

KW - model

KW - ritu

U2 - 10.1103/PhysRevC.89.064309

DO - 10.1103/PhysRevC.89.064309

M3 - Article

SN - 2469-9985

VL - 89

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064309

ER -

alpha decay of the pi h(11/2) isomer in Ir-164

Abstract

Keywords

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