Radiative Width of the Hoyle State from γ -Ray Spectroscopy

T. Kibédi; B. Alshahrani; A. E. Stuchbery; A. C. Larsen; A. Görgen; S. Siem; M. Guttormsen; F. Giacoppo; A. I. Morales; E. Sahin; G. M. Tveten; F. L.Bello Garrote; L. Crespo Campo; T. K. Eriksen; M. Klintefjord; S. Maharramova; H. T. Nyhus; T. G. Tornyi; T. Renstrøm; W. Paulsen

doi:10.1103/PhysRevLett.125.182701

Radiative Width of the Hoyle State from γ -Ray Spectroscopy

T. Kibédi^*, B. Alshahrani, A. E. Stuchbery, A. C. Larsen, A. Görgen, S. Siem, M. Guttormsen, F. Giacoppo, A. I. Morales, E. Sahin, G. M. Tveten, F. L.Bello Garrote, L. Crespo Campo, T. K. Eriksen, M. Klintefjord, S. Maharramova, H. T. Nyhus, T. G. Tornyi, T. Renstrøm, W. Paulsen

^*Corresponding author for this work

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

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Abstract

The cascading 3.21 and 4.44 MeV electric quadrupole transitions have been observed from the Hoyle state at 7.65 MeV excitation energy in C12, excited by the C12(p,p′) reaction at 10.7 MeV proton energy. From the proton-γ-γ triple coincidence data, a value of Γrad/Γ=6.2(6)×10-4 was obtained for the radiative branching ratio. Using our results, together with ΓπE0/Γ from Eriksen et al. [Phys. Rev. C 102, 024320 (2020)PRVCAN2469-998510.1103/PhysRevC.102.024320] and the currently adopted Γπ(E0) values, the radiative width of the Hoyle state is determined as Γrad=5.1(6)×10-3 eV. This value is about 34% higher than the currently adopted value and will impact models of stellar evolution and nucleosynthesis.

Original language	English
Article number	182701
Journal	Physical Review Letters
Volume	125
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.125.182701
Publication status	Published - 27 Oct 2020

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Kibédi, T., Alshahrani, B., Stuchbery, A. E., Larsen, A. C., Görgen, A., Siem, S., Guttormsen, M., Giacoppo, F., Morales, A. I., Sahin, E., Tveten, G. M., Garrote, F. L. B., Campo, L. C., Eriksen, T. K., Klintefjord, M., Maharramova, S., Nyhus, H. T., Tornyi, T. G., Renstrøm, T., & Paulsen, W. (2020). Radiative Width of the Hoyle State from γ -Ray Spectroscopy. Physical Review Letters, 125(18), Article 182701. https://doi.org/10.1103/PhysRevLett.125.182701

@article{b413b766545048ccb8a15076851b716f,

title = "Radiative Width of the Hoyle State from γ -Ray Spectroscopy",

abstract = "The cascading 3.21 and 4.44 MeV electric quadrupole transitions have been observed from the Hoyle state at 7.65 MeV excitation energy in C12, excited by the C12(p,p′) reaction at 10.7 MeV proton energy. From the proton-γ-γ triple coincidence data, a value of Γrad/Γ=6.2(6)×10-4 was obtained for the radiative branching ratio. Using our results, together with ΓπE0/Γ from Eriksen et al. [Phys. Rev. C 102, 024320 (2020)PRVCAN2469-998510.1103/PhysRevC.102.024320] and the currently adopted Γπ(E0) values, the radiative width of the Hoyle state is determined as Γrad=5.1(6)×10-3 eV. This value is about 34% higher than the currently adopted value and will impact models of stellar evolution and nucleosynthesis.",

author = "T. Kib{\'e}di and B. Alshahrani and Stuchbery, {A. E.} and Larsen, {A. C.} and A. G{\"o}rgen and S. Siem and M. Guttormsen and F. Giacoppo and Morales, {A. I.} and E. Sahin and Tveten, {G. M.} and Garrote, {F. L.Bello} and Campo, {L. Crespo} and Eriksen, {T. K.} and M. Klintefjord and S. Maharramova and Nyhus, {H. T.} and Tornyi, {T. G.} and T. Renstr{\o}m and W. Paulsen",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = oct,

day = "27",

doi = "10.1103/PhysRevLett.125.182701",

language = "English",

volume = "125",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "18",

}

Kibédi, T, Alshahrani, B, Stuchbery, AE, Larsen, AC, Görgen, A, Siem, S, Guttormsen, M, Giacoppo, F, Morales, AI, Sahin, E, Tveten, GM, Garrote, FLB, Campo, LC, Eriksen, TK, Klintefjord, M, Maharramova, S, Nyhus, HT, Tornyi, TG, Renstrøm, T & Paulsen, W 2020, 'Radiative Width of the Hoyle State from γ -Ray Spectroscopy', Physical Review Letters, vol. 125, no. 18, 182701. https://doi.org/10.1103/PhysRevLett.125.182701

TY - JOUR

T1 - Radiative Width of the Hoyle State from γ -Ray Spectroscopy

AU - Kibédi, T.

AU - Alshahrani, B.

AU - Stuchbery, A. E.

AU - Larsen, A. C.

AU - Görgen, A.

AU - Siem, S.

AU - Guttormsen, M.

AU - Giacoppo, F.

AU - Morales, A. I.

AU - Sahin, E.

AU - Tveten, G. M.

AU - Garrote, F. L.Bello

AU - Campo, L. Crespo

AU - Eriksen, T. K.

AU - Klintefjord, M.

AU - Maharramova, S.

AU - Nyhus, H. T.

AU - Tornyi, T. G.

AU - Renstrøm, T.

AU - Paulsen, W.

PY - 2020/10/27

Y1 - 2020/10/27

N2 - The cascading 3.21 and 4.44 MeV electric quadrupole transitions have been observed from the Hoyle state at 7.65 MeV excitation energy in C12, excited by the C12(p,p′) reaction at 10.7 MeV proton energy. From the proton-γ-γ triple coincidence data, a value of Γrad/Γ=6.2(6)×10-4 was obtained for the radiative branching ratio. Using our results, together with ΓπE0/Γ from Eriksen et al. [Phys. Rev. C 102, 024320 (2020)PRVCAN2469-998510.1103/PhysRevC.102.024320] and the currently adopted Γπ(E0) values, the radiative width of the Hoyle state is determined as Γrad=5.1(6)×10-3 eV. This value is about 34% higher than the currently adopted value and will impact models of stellar evolution and nucleosynthesis.

AB - The cascading 3.21 and 4.44 MeV electric quadrupole transitions have been observed from the Hoyle state at 7.65 MeV excitation energy in C12, excited by the C12(p,p′) reaction at 10.7 MeV proton energy. From the proton-γ-γ triple coincidence data, a value of Γrad/Γ=6.2(6)×10-4 was obtained for the radiative branching ratio. Using our results, together with ΓπE0/Γ from Eriksen et al. [Phys. Rev. C 102, 024320 (2020)PRVCAN2469-998510.1103/PhysRevC.102.024320] and the currently adopted Γπ(E0) values, the radiative width of the Hoyle state is determined as Γrad=5.1(6)×10-3 eV. This value is about 34% higher than the currently adopted value and will impact models of stellar evolution and nucleosynthesis.

UR - http://www.scopus.com/inward/record.url?scp=85094879468&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.125.182701

DO - 10.1103/PhysRevLett.125.182701

M3 - Article

SN - 0031-9007

VL - 125

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

M1 - 182701

ER -

Radiative Width of the Hoyle State from γ -Ray Spectroscopy

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