Identification of a 6.6 microsecond isomeric state in 175Ir

S. A. Gillespie; A. N. Andreyev; M. Al Monthery; C. J. Barton; S. Antalic; K. Auranen; H. Badran; D. Cox; J. G. Cubiss; D. O'Donnell; T. Grahn; P. T. Greenlees; A. Herzan; E. Higgins; R. Julin; S. Juutinen; J. Klimo; J. Konki; M. Leino; M. Mallaburn; J. Pakarinen; P. Papadakis; J. Partanen; P. M. Prajapati; P. Rahkila; M. Sandzelius; C. Scholey; J. Sorri; S. Stolze; R. Urban; J. Uusitalo; M. Venhart; F. Weaving

doi:10.1103/PhysRevC.99.064310

Identification of a 6.6 microsecond isomeric state in 175Ir

S. A. Gillespie^*, A. N. Andreyev, M. Al Monthery, C. J. Barton, S. Antalic, K. Auranen, H. Badran, D. Cox, J. G. Cubiss, D. O'Donnell, T. Grahn, P. T. Greenlees, A. Herzan, E. Higgins, R. Julin, S. Juutinen, J. Klimo, J. Konki, M. Leino, M. MallaburnJ. Pakarinen, P. Papadakis, J. Partanen, P. M. Prajapati, P. Rahkila, M. Sandzelius, C. Scholey, J. Sorri, S. Stolze, R. Urban, J. Uusitalo, M. Venhart, F. Weaving

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

An experiment has been performed to study excited states in the neutron-deficient nucleus 175Ir via the use of the JUROGAM II high-purity germanium detector array and the RITU gas-filled separator at JYFL, Jyväskylä. By using isomer tagging, an isomeric state with a half-life of 6.58(15) 𝜇⁢s has been observed in 175Ir for the first time. It has been established that the isomer decays via a 45.2 (𝐸⁢1)–26.1 (𝑀⁢1) keV cascade to new states below the previously reported ground state in 175Ir with 𝐼𝜋=(5/2−). We now reassign this (5/2−) state to the isomeric state discovered in this study.

Original language	English
Article number	064310
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review C
Volume	99
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.99.064310
Publication status	Published - 7 Jun 2019

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Gillespie, S. A., Andreyev, A. N., Monthery, M. A., Barton, C. J., Antalic, S., Auranen, K., Badran, H., Cox, D., Cubiss, J. G., O'Donnell, D., Grahn, T., Greenlees, P. T., Herzan, A., Higgins, E., Julin, R., Juutinen, S., Klimo, J., Konki, J., Leino, M., ... Weaving, F. (2019). Identification of a 6.6 microsecond isomeric state in 175Ir. Physical Review C, 99(6), 1-6. Article 064310. https://doi.org/10.1103/PhysRevC.99.064310

@article{8d4326b6679e4c44a98d7e822228b80b,

title = "Identification of a 6.6 microsecond isomeric state in 175Ir",

abstract = "An experiment has been performed to study excited states in the neutron-deficient nucleus 175Ir via the use of the JUROGAM II high-purity germanium detector array and the RITU gas-filled separator at JYFL, Jyv{\"a}skyl{\"a}. By using isomer tagging, an isomeric state with a half-life of 6.58(15) 𝜇⁢s has been observed in 175Ir for the first time. It has been established that the isomer decays via a 45.2 (𝐸⁢1)–26.1 (𝑀⁢1) keV cascade to new states below the previously reported ground state in 175Ir with 𝐼𝜋=(5/2−). We now reassign this (5/2−) state to the isomeric state discovered in this study.",

author = "Gillespie, \{S. A.\} and Andreyev, \{A. N.\} and Monthery, \{M. Al\} and Barton, \{C. J.\} and S. Antalic and K. Auranen and H. Badran and D. Cox and Cubiss, \{J. G.\} and D. O'Donnell and T. Grahn and Greenlees, \{P. T.\} and A. Herzan and E. Higgins and R. Julin and S. Juutinen and J. Klimo and J. Konki and M. Leino and M. Mallaburn and J. Pakarinen and P. Papadakis and J. Partanen and Prajapati, \{P. M.\} and P. Rahkila and M. Sandzelius and C. Scholey and J. Sorri and S. Stolze and R. Urban and J. Uusitalo and M. Venhart and F. Weaving",

note = "Acceptance date unknown - proxy used. {\textcopyright}2019 American Physical Society. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details.",

year = "2019",

month = jun,

day = "7",

doi = "10.1103/PhysRevC.99.064310",

language = "English",

volume = "99",

pages = "1--6",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "6",

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Gillespie, SA, Andreyev, AN, Monthery, MA, Barton, CJ, Antalic, S, Auranen, K, Badran, H, Cox, D, Cubiss, JG, O'Donnell, D, Grahn, T, Greenlees, PT, Herzan, A, Higgins, E, Julin, R, Juutinen, S, Klimo, J, Konki, J, Leino, M, Mallaburn, M, Pakarinen, J, Papadakis, P, Partanen, J, Prajapati, PM, Rahkila, P, Sandzelius, M, Scholey, C, Sorri, J, Stolze, S, Urban, R, Uusitalo, J, Venhart, M & Weaving, F 2019, 'Identification of a 6.6 microsecond isomeric state in 175Ir', Physical Review C, vol. 99, no. 6, 064310, pp. 1-6. https://doi.org/10.1103/PhysRevC.99.064310

TY - JOUR

T1 - Identification of a 6.6 microsecond isomeric state in 175Ir

AU - Gillespie, S. A.

AU - Andreyev, A. N.

AU - Monthery, M. Al

AU - Barton, C. J.

AU - Antalic, S.

AU - Auranen, K.

AU - Badran, H.

AU - Cox, D.

AU - Cubiss, J. G.

AU - O'Donnell, D.

AU - Grahn, T.

AU - Greenlees, P. T.

AU - Herzan, A.

AU - Higgins, E.

AU - Julin, R.

AU - Juutinen, S.

AU - Klimo, J.

AU - Konki, J.

AU - Leino, M.

AU - Mallaburn, M.

AU - Pakarinen, J.

AU - Papadakis, P.

AU - Partanen, J.

AU - Prajapati, P. M.

AU - Rahkila, P.

AU - Sandzelius, M.

AU - Scholey, C.

AU - Sorri, J.

AU - Stolze, S.

AU - Urban, R.

AU - Uusitalo, J.

AU - Venhart, M.

AU - Weaving, F.

N1 - Acceptance date unknown - proxy used. ©2019 American Physical Society. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

PY - 2019/6/7

Y1 - 2019/6/7

N2 - An experiment has been performed to study excited states in the neutron-deficient nucleus 175Ir via the use of the JUROGAM II high-purity germanium detector array and the RITU gas-filled separator at JYFL, Jyväskylä. By using isomer tagging, an isomeric state with a half-life of 6.58(15) 𝜇⁢s has been observed in 175Ir for the first time. It has been established that the isomer decays via a 45.2 (𝐸⁢1)–26.1 (𝑀⁢1) keV cascade to new states below the previously reported ground state in 175Ir with 𝐼𝜋=(5/2−). We now reassign this (5/2−) state to the isomeric state discovered in this study.

AB - An experiment has been performed to study excited states in the neutron-deficient nucleus 175Ir via the use of the JUROGAM II high-purity germanium detector array and the RITU gas-filled separator at JYFL, Jyväskylä. By using isomer tagging, an isomeric state with a half-life of 6.58(15) 𝜇⁢s has been observed in 175Ir for the first time. It has been established that the isomer decays via a 45.2 (𝐸⁢1)–26.1 (𝑀⁢1) keV cascade to new states below the previously reported ground state in 175Ir with 𝐼𝜋=(5/2−). We now reassign this (5/2−) state to the isomeric state discovered in this study.

U2 - 10.1103/PhysRevC.99.064310

DO - 10.1103/PhysRevC.99.064310

M3 - Article

SN - 2469-9985

VL - 99

SP - 1

EP - 6

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064310

ER -

Identification of a 6.6 microsecond isomeric state in 175Ir

Abstract

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