Extending the Hoyle-State Paradigm to C 12 + C 12 Fusion

P. Adsley; M. Heine; D. G. Jenkins; S. Courtin; R. Neveling; J. W. Brümmer; L. M. Donaldson; N. Y. Kheswa; K. C.W. Li; D. J. Marín-Lámbarri; P. Z. Mabika; P. Papka; L. Pellegri; V. Pesudo; B. Rebeiro; F. D. Smit; W. Yahia-Cherif

doi:10.1103/PhysRevLett.129.102701

Extending the Hoyle-State Paradigm to C 12 + C 12 Fusion

P. Adsley^*, M. Heine, D. G. Jenkins, S. Courtin, R. Neveling, J. W. Brümmer, L. M. Donaldson, N. Y. Kheswa, K. C.W. Li, D. J. Marín-Lámbarri, P. Z. Mabika, P. Papka, L. Pellegri, V. Pesudo, B. Rebeiro, F. D. Smit, W. Yahia-Cherif

^*Corresponding author for this work

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

Abstract

Carbon burning is a key step in the evolution of massive stars, Type 1a supernovae and superbursts in x-ray binary systems. Determining the C12+C12 fusion cross section at relevant energies by extrapolation of direct measurements is challenging due to resonances at and below the Coulomb barrier. A study of the Mg24(α,α′)Mg24 reaction has identified several 0+ states in Mg24, close to the C12+C12 threshold, which predominantly decay to Ne20(ground state)+α. These states were not observed in Ne20(α,α0)Ne20 resonance scattering suggesting that they may have a dominant C12+C12 cluster structure. Given the very low angular momentum associated with sub-barrier fusion, these states may play a decisive role in C12+C12 fusion in analogy to the Hoyle state in helium burning. We present estimates of updated C12+C12 fusion reaction rates.

Original language	English
Article number	102701
Number of pages	6
Journal	Physical Review Letters
Volume	129
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.129.102701
Publication status	Published - 2 Sept 2022

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10.1103/PhysRevLett.129.102701

Extending the Hoyle-State Paradigm to 12C + 12C Fusion
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Adsley, P., Heine, M., Jenkins, D. G., Courtin, S., Neveling, R., Brümmer, J. W., Donaldson, L. M., Kheswa, N. Y., Li, K. C. W., Marín-Lámbarri, D. J., Mabika, P. Z., Papka, P., Pellegri, L., Pesudo, V., Rebeiro, B., Smit, F. D., & Yahia-Cherif, W. (2022). Extending the Hoyle-State Paradigm to C 12 + C 12 Fusion. Physical Review Letters, 129(10), Article 102701. https://doi.org/10.1103/PhysRevLett.129.102701

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title = "Extending the Hoyle-State Paradigm to C 12 + C 12 Fusion",

abstract = "Carbon burning is a key step in the evolution of massive stars, Type 1a supernovae and superbursts in x-ray binary systems. Determining the C12+C12 fusion cross section at relevant energies by extrapolation of direct measurements is challenging due to resonances at and below the Coulomb barrier. A study of the Mg24(α,α′)Mg24 reaction has identified several 0+ states in Mg24, close to the C12+C12 threshold, which predominantly decay to Ne20(ground state)+α. These states were not observed in Ne20(α,α0)Ne20 resonance scattering suggesting that they may have a dominant C12+C12 cluster structure. Given the very low angular momentum associated with sub-barrier fusion, these states may play a decisive role in C12+C12 fusion in analogy to the Hoyle state in helium burning. We present estimates of updated C12+C12 fusion reaction rates.",

author = "P. Adsley and M. Heine and Jenkins, {D. G.} and S. Courtin and R. Neveling and Br{\"u}mmer, {J. W.} and Donaldson, {L. M.} and Kheswa, {N. Y.} and Li, {K. C.W.} and Mar{\'i}n-L{\'a}mbarri, {D. J.} and Mabika, {P. Z.} and P. Papka and L. Pellegri and V. Pesudo and B. Rebeiro and Smit, {F. D.} and W. Yahia-Cherif",

note = "{\textcopyright} 2022 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",

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Adsley, P, Heine, M, Jenkins, DG, Courtin, S, Neveling, R, Brümmer, JW, Donaldson, LM, Kheswa, NY, Li, KCW, Marín-Lámbarri, DJ, Mabika, PZ, Papka, P, Pellegri, L, Pesudo, V, Rebeiro, B, Smit, FD & Yahia-Cherif, W 2022, 'Extending the Hoyle-State Paradigm to C 12 + C 12 Fusion', Physical Review Letters, vol. 129, no. 10, 102701. https://doi.org/10.1103/PhysRevLett.129.102701

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AU - Heine, M.

AU - Jenkins, D. G.

AU - Courtin, S.

AU - Neveling, R.

AU - Brümmer, J. W.

AU - Donaldson, L. M.

AU - Kheswa, N. Y.

AU - Li, K. C.W.

AU - Marín-Lámbarri, D. J.

AU - Mabika, P. Z.

AU - Papka, P.

AU - Pellegri, L.

AU - Pesudo, V.

AU - Rebeiro, B.

AU - Smit, F. D.

AU - Yahia-Cherif, W.

PY - 2022/9/2

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AB - Carbon burning is a key step in the evolution of massive stars, Type 1a supernovae and superbursts in x-ray binary systems. Determining the C12+C12 fusion cross section at relevant energies by extrapolation of direct measurements is challenging due to resonances at and below the Coulomb barrier. A study of the Mg24(α,α′)Mg24 reaction has identified several 0+ states in Mg24, close to the C12+C12 threshold, which predominantly decay to Ne20(ground state)+α. These states were not observed in Ne20(α,α0)Ne20 resonance scattering suggesting that they may have a dominant C12+C12 cluster structure. Given the very low angular momentum associated with sub-barrier fusion, these states may play a decisive role in C12+C12 fusion in analogy to the Hoyle state in helium burning. We present estimates of updated C12+C12 fusion reaction rates.

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Extending the Hoyle-State Paradigm to C 12 + C 12 Fusion

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