Short-lived isomers in192Po and 194Po

B. Andel; A. N. Andreyev; S. Antalic; F. P. Heßberger; D. Ackermann; S. Hofmann; M. Huyse; Z. Kalaninová; B. Kindler; I. Kojouharov; P. Kuusiniemi; B. Lommel; K. Nishio; R. D. Page; B. Sulignano; P. Van Duppen

doi:10.1103/PhysRevC.93.064316

Short-lived isomers in192Po and 194Po

B. Andel, A. N. Andreyev, S. Antalic, F. P. Heßberger, D. Ackermann, S. Hofmann, M. Huyse, Z. Kalaninová, B. Kindler, I. Kojouharov, P. Kuusiniemi, B. Lommel, K. Nishio, R. D. Page, B. Sulignano, P. Van Duppen

Physics

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

Abstract

Isomeric states in Po194 and Po192 were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions Pr141(Fe56, p2n)Po194 and Sm144(V51, p2n)Po192. Several new γ-ray transitions were attributed to the isomers and γ−γ coincidences for both isomers were studied for the first time. The 459-keV transition earlier, tentatively proposed as de-exciting the isomeric level in Po194, was replaced by a new 248-keV transition, and the spin of this isomer was reassigned from (11−) to (10−). The de-excitation of the (11−) isomeric level in Po192 by the 154-keV transition was confirmed and a parallel de-excitation by a 733-keV (E3) transition to (8+) level of the ground-state band was suggested. Moreover, side feeding to the (4+) level of the ground-state band was proposed. The paper also discusses strengths of transitions de-exciting 11− isomers in neighboring Po and Pb isotopes.

Original language	English
Article number	64316
Number of pages	12
Journal	Physical Review C
Volume	93
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.93.064316
Publication status	Published - 17 Jun 2016

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© 2016, American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

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PhysRevC.93.064316
© 2016, American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
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Cite this

@article{cf4d7aedb75942288509f9700e97f4fa,

title = "Short-lived isomers in192Po and 194Po",

abstract = "Isomeric states in Po194 and Po192 were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions Pr141(Fe56, p2n)Po194 and Sm144(V51, p2n)Po192. Several new γ-ray transitions were attributed to the isomers and γ−γ coincidences for both isomers were studied for the first time. The 459-keV transition earlier, tentatively proposed as de-exciting the isomeric level in Po194, was replaced by a new 248-keV transition, and the spin of this isomer was reassigned from (11−) to (10−). The de-excitation of the (11−) isomeric level in Po192 by the 154-keV transition was confirmed and a parallel de-excitation by a 733-keV (E3) transition to (8+) level of the ground-state band was suggested. Moreover, side feeding to the (4+) level of the ground-state band was proposed. The paper also discusses strengths of transitions de-exciting 11− isomers in neighboring Po and Pb isotopes.",

author = "B. Andel and Andreyev, {A. N.} and S. Antalic and He{\ss}berger, {F. P.} and D. Ackermann and S. Hofmann and M. Huyse and Z. Kalaninov{\'a} and B. Kindler and I. Kojouharov and P. Kuusiniemi and B. Lommel and K. Nishio and Page, {R. D.} and B. Sulignano and {Van Duppen}, P.",

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year = "2016",

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day = "17",

doi = "10.1103/PhysRevC.93.064316",

language = "English",

volume = "93",

journal = "Physical Review C",

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TY - JOUR

T1 - Short-lived isomers in192Po and 194Po

AU - Andel, B.

AU - Andreyev, A. N.

AU - Antalic, S.

AU - Heßberger, F. P.

AU - Ackermann, D.

AU - Hofmann, S.

AU - Huyse, M.

AU - Kalaninová, Z.

AU - Kindler, B.

AU - Kojouharov, I.

AU - Kuusiniemi, P.

AU - Lommel, B.

AU - Nishio, K.

AU - Page, R. D.

AU - Sulignano, B.

AU - Van Duppen, P.

N1 - © 2016, American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2016/6/17

Y1 - 2016/6/17

N2 - Isomeric states in Po194 and Po192 were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions Pr141(Fe56, p2n)Po194 and Sm144(V51, p2n)Po192. Several new γ-ray transitions were attributed to the isomers and γ−γ coincidences for both isomers were studied for the first time. The 459-keV transition earlier, tentatively proposed as de-exciting the isomeric level in Po194, was replaced by a new 248-keV transition, and the spin of this isomer was reassigned from (11−) to (10−). The de-excitation of the (11−) isomeric level in Po192 by the 154-keV transition was confirmed and a parallel de-excitation by a 733-keV (E3) transition to (8+) level of the ground-state band was suggested. Moreover, side feeding to the (4+) level of the ground-state band was proposed. The paper also discusses strengths of transitions de-exciting 11− isomers in neighboring Po and Pb isotopes.

AB - Isomeric states in Po194 and Po192 were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions Pr141(Fe56, p2n)Po194 and Sm144(V51, p2n)Po192. Several new γ-ray transitions were attributed to the isomers and γ−γ coincidences for both isomers were studied for the first time. The 459-keV transition earlier, tentatively proposed as de-exciting the isomeric level in Po194, was replaced by a new 248-keV transition, and the spin of this isomer was reassigned from (11−) to (10−). The de-excitation of the (11−) isomeric level in Po192 by the 154-keV transition was confirmed and a parallel de-excitation by a 733-keV (E3) transition to (8+) level of the ground-state band was suggested. Moreover, side feeding to the (4+) level of the ground-state band was proposed. The paper also discusses strengths of transitions de-exciting 11− isomers in neighboring Po and Pb isotopes.

U2 - 10.1103/PhysRevC.93.064316

DO - 10.1103/PhysRevC.93.064316

M3 - Article

SN - 0556-2813

VL - 93

JO - Physical Review C

JF - Physical Review C

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