Collective 2p-2h intruder states in 118Sn studied via beta decay of 118In using the GRIFFIN spectrometer at TRIUMF

K. Ortner; C. Andreoiu; M. Spieker; G. C. Ball; N. Bernier; H. Bidaman; V. Bildstein; M. Bowry; D. S. Cross; M. R. Dunlop; R. Dunlop; F. H. Garcia; A. B. Garnsworthy; P. E. Garrett; J. Henderson; J. Measures; B. Olaizola; J. Park; C. M. Petrache; J. L. Pore; K. Raymond; J. K. Smith; D. Southall; C. E. Svensson; M. Ticu; J. Turko; K. Whitmore; T. Zidar

doi:10.1103/PhysRevC.102.024323

Collective 2p-2h intruder states in ¹¹⁸Sn studied via beta decay of ¹¹⁸In using the GRIFFIN spectrometer at TRIUMF

K. Ortner^*, C. Andreoiu, M. Spieker, G. C. Ball, N. Bernier, H. Bidaman, V. Bildstein, M. Bowry, D. S. Cross, M. R. Dunlop, R. Dunlop, F. H. Garcia, A. B. Garnsworthy, P. E. Garrett, J. Henderson, J. Measures, B. Olaizola, J. Park, C. M. Petrache, J. L. PoreK. Raymond, J. K. Smith, D. Southall, C. E. Svensson, M. Ticu, J. Turko, K. Whitmore, T. Zidar

^*Corresponding author for this work

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Abstract

The low-lying structure of semimagic ¹¹⁸Sn has been investigated through the
β decay of ¹¹⁸In(T_1/2=4.45min) to study shape coexistence via the reduced transition probabilities of states in the 2p-2h proton intruder band. This high-statistics study was carried out at TRIUMF-ISAC with the GRIFFIN spectrometer. In total, 99 transitions have been placed in the level scheme with 43 being newly observed. Three low-lying γ-ray transitions with energies near 285 keV have been resolved from which the 2⁺_intr.→0⁺_intr. 284.52-keV transition was determined to have half of the previous branching fraction leading to a
B(E2;2⁺₂→0⁺₂) of 21(4) W.u. compared to 39(7) W.u. from the previous measurement. Calculations using sd IBM-2 with mixing have also been made to compare the experimental B(E2) values to the theoretical values and to make comparisons to the ^114,116Sn isotopes previously studied using the same theoretical model.

Original language	English
Article number	024323
Journal	Physical Review C
Volume	102
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.102.024323
Publication status	Published - 18 Aug 2020
Externally published	Yes

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2020 06 22 Ortner et al Collective acceptedAccepted author manuscript, 1.24 MB

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Ortner, K., Andreoiu, C., Spieker, M., Ball, G. C., Bernier, N., Bidaman, H., Bildstein, V., Bowry, M., Cross, D. S., Dunlop, M. R., Dunlop, R., Garcia, F. H., Garnsworthy, A. B., Garrett, P. E., Henderson, J., Measures, J., Olaizola, B., Park, J., Petrache, C. M., ... Zidar, T. (2020). Collective 2p-2h intruder states in ¹¹⁸Sn studied via beta decay of ¹¹⁸In using the GRIFFIN spectrometer at TRIUMF. Physical Review C, 102(2), Article 024323. https://doi.org/10.1103/PhysRevC.102.024323

@article{ab7438bb4af449c58a768220fd295adc,

title = "Collective 2p-2h intruder states in 118Sn studied via beta decay of 118In using the GRIFFIN spectrometer at TRIUMF",

abstract = "The low-lying structure of semimagic 118Sn has been investigated through the β decay of 118In(T1/2=4.45min) to study shape coexistence via the reduced transition probabilities of states in the 2p-2h proton intruder band. This high-statistics study was carried out at TRIUMF-ISAC with the GRIFFIN spectrometer. In total, 99 transitions have been placed in the level scheme with 43 being newly observed. Three low-lying γ-ray transitions with energies near 285 keV have been resolved from which the 2+intr.→0+intr. 284.52-keV transition was determined to have half of the previous branching fraction leading to a B(E2;2+2→0+2) of 21(4) W.u. compared to 39(7) W.u. from the previous measurement. Calculations using sd IBM-2 with mixing have also been made to compare the experimental B(E2) values to the theoretical values and to make comparisons to the 114,116Sn isotopes previously studied using the same theoretical model.",

author = "K. Ortner and C. Andreoiu and M. Spieker and Ball, {G. C.} and N. Bernier and H. Bidaman and V. Bildstein and M. Bowry and Cross, {D. S.} and Dunlop, {M. R.} and R. Dunlop and Garcia, {F. H.} and Garnsworthy, {A. B.} and Garrett, {P. E.} and J. Henderson and J. Measures and B. Olaizola and J. Park and Petrache, {C. M.} and Pore, {J. L.} and K. Raymond and Smith, {J. K.} and D. Southall and Svensson, {C. E.} and M. Ticu and J. Turko and K. Whitmore and T. Zidar",

year = "2020",

month = aug,

day = "18",

doi = "10.1103/PhysRevC.102.024323",

language = "English",

volume = "102",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

number = "2",

}

Ortner, K, Andreoiu, C, Spieker, M, Ball, GC, Bernier, N, Bidaman, H, Bildstein, V, Bowry, M, Cross, DS, Dunlop, MR, Dunlop, R, Garcia, FH, Garnsworthy, AB, Garrett, PE, Henderson, J, Measures, J, Olaizola, B, Park, J, Petrache, CM, Pore, JL, Raymond, K, Smith, JK, Southall, D, Svensson, CE, Ticu, M, Turko, J, Whitmore, K & Zidar, T 2020, 'Collective 2p-2h intruder states in ¹¹⁸Sn studied via beta decay of ¹¹⁸In using the GRIFFIN spectrometer at TRIUMF', Physical Review C, vol. 102, no. 2, 024323. https://doi.org/10.1103/PhysRevC.102.024323

TY - JOUR

T1 - Collective 2p-2h intruder states in 118Sn studied via beta decay of 118In using the GRIFFIN spectrometer at TRIUMF

AU - Ortner, K.

AU - Andreoiu, C.

AU - Spieker, M.

AU - Ball, G. C.

AU - Bernier, N.

AU - Bidaman, H.

AU - Bildstein, V.

AU - Bowry, M.

AU - Cross, D. S.

AU - Dunlop, M. R.

AU - Dunlop, R.

AU - Garcia, F. H.

AU - Garnsworthy, A. B.

AU - Garrett, P. E.

AU - Henderson, J.

AU - Measures, J.

AU - Olaizola, B.

AU - Park, J.

AU - Petrache, C. M.

AU - Pore, J. L.

AU - Raymond, K.

AU - Smith, J. K.

AU - Southall, D.

AU - Svensson, C. E.

AU - Ticu, M.

AU - Turko, J.

AU - Whitmore, K.

AU - Zidar, T.

PY - 2020/8/18

Y1 - 2020/8/18

N2 - The low-lying structure of semimagic 118Sn has been investigated through the β decay of 118In(T1/2=4.45min) to study shape coexistence via the reduced transition probabilities of states in the 2p-2h proton intruder band. This high-statistics study was carried out at TRIUMF-ISAC with the GRIFFIN spectrometer. In total, 99 transitions have been placed in the level scheme with 43 being newly observed. Three low-lying γ-ray transitions with energies near 285 keV have been resolved from which the 2+intr.→0+intr. 284.52-keV transition was determined to have half of the previous branching fraction leading to a B(E2;2+2→0+2) of 21(4) W.u. compared to 39(7) W.u. from the previous measurement. Calculations using sd IBM-2 with mixing have also been made to compare the experimental B(E2) values to the theoretical values and to make comparisons to the 114,116Sn isotopes previously studied using the same theoretical model.

AB - The low-lying structure of semimagic 118Sn has been investigated through the β decay of 118In(T1/2=4.45min) to study shape coexistence via the reduced transition probabilities of states in the 2p-2h proton intruder band. This high-statistics study was carried out at TRIUMF-ISAC with the GRIFFIN spectrometer. In total, 99 transitions have been placed in the level scheme with 43 being newly observed. Three low-lying γ-ray transitions with energies near 285 keV have been resolved from which the 2+intr.→0+intr. 284.52-keV transition was determined to have half of the previous branching fraction leading to a B(E2;2+2→0+2) of 21(4) W.u. compared to 39(7) W.u. from the previous measurement. Calculations using sd IBM-2 with mixing have also been made to compare the experimental B(E2) values to the theoretical values and to make comparisons to the 114,116Sn isotopes previously studied using the same theoretical model.

U2 - 10.1103/PhysRevC.102.024323

DO - 10.1103/PhysRevC.102.024323

M3 - Article

SN - 0556-2813

VL - 102

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024323

ER -

Collective 2p-2h intruder states in 118Sn studied via beta decay of 118In using the GRIFFIN spectrometer at TRIUMF

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Collective 2p-2h intruder states in ¹¹⁸Sn studied via beta decay of ¹¹⁸In using the GRIFFIN spectrometer at TRIUMF