Consistent analysis of the 2                      excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering

M. Freer; M. Itoh; T. Kawabata; S. Kishi; T. Murakami; H. Fujita; M. Fujiwara; N. Hashimoto; K. Nakanishi; Y. Nakatsugawa; S. Okumura; H. Sakaguchi; Y. Yasuda; M. Yosoi; J. Zenihiro; H. Akimune; Z. Buthelezi; S.V. Förtsch; R. Neveling; S.M. Perez; F.D. Smit; J. Carter; I. Usman; R.W. Fearick; U. Garg; B.K. Nayak; K. Kawase; P. Papka; J.A. Swartz; Y. Sasamoto; H. Takeda; S. Terashima; M. Uchida

doi:10.1103/PhysRevC.86.034320

Consistent analysis of the 2 excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering

M. Freer, M. Itoh, T. Kawabata, S. Kishi, T. Murakami, H. Fujita, M. Fujiwara, N. Hashimoto, K. Nakanishi, Y. Nakatsugawa, S. Okumura, H. Sakaguchi, Y. Yasuda, M. Yosoi, J. Zenihiro, H. Akimune, Z. Buthelezi, S.V. Förtsch, R. Neveling, S.M. PerezF.D. Smit, J. Carter, I. Usman, R.W. Fearick, U. Garg, B.K. Nayak, K. Kawase, P. Papka, J.A. Swartz, Y. Sasamoto, H. Takeda, S. Terashima, M. Uchida

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Abstract

The 12C excitation energy spectra populated in both proton and α-particle inelastic scattering measurements are examined. The data indicate the existence of a 2 state at E =9.75(0.15) MeV with a width of 750(150)keV. It is believed that this state corresponds to the 2 excitation of the 7.65 MeV, 0 , Hoyle state, which acts as the main path by which carbon is synthesized in stars. A simultaneous R-matrix analysis of the two sets of data indicates that the 2 state possesses a very large α-reduced width, approaching the Wigner limit. This would indicate that the state is associated with a highly clustered structure. The potential geometric arrangements of the clusters is discussed.

Original language	English
Journal	Physical Review C
Volume	86
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.86.034320
Publication status	Published - 14 Sept 2012

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10.1103/PhysRevC.86.034320

Birmingham Nuclear Physics Consolidated Grant
Freer, M., Evans, P., Jones, P., Wheldon, C. & Lazzeroni, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/11 → 31/07/14
Project: Research Councils

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Freer, M., Itoh, M., Kawabata, T., Kishi, S., Murakami, T., Fujita, H., Fujiwara, M., Hashimoto, N., Nakanishi, K., Nakatsugawa, Y., Okumura, S., Sakaguchi, H., Yasuda, Y., Yosoi, M., Zenihiro, J., Akimune, H., Buthelezi, Z., Förtsch, S. V., Neveling, R., ... Uchida, M. (2012). Consistent analysis of the 2 excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering. Physical Review C, 86(3). https://doi.org/10.1103/PhysRevC.86.034320

@article{ed54377e682b424ba2a46d65dd954632,

title = "Consistent analysis of the 2 excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering",

abstract = "The 12C excitation energy spectra populated in both proton and α-particle inelastic scattering measurements are examined. The data indicate the existence of a 2 state at E =9.75(0.15) MeV with a width of 750(150)keV. It is believed that this state corresponds to the 2 excitation of the 7.65 MeV, 0 , Hoyle state, which acts as the main path by which carbon is synthesized in stars. A simultaneous R-matrix analysis of the two sets of data indicates that the 2 state possesses a very large α-reduced width, approaching the Wigner limit. This would indicate that the state is associated with a highly clustered structure. The potential geometric arrangements of the clusters is discussed.",

author = "M. Freer and M. Itoh and T. Kawabata and S. Kishi and T. Murakami and H. Fujita and M. Fujiwara and N. Hashimoto and K. Nakanishi and Y. Nakatsugawa and S. Okumura and H. Sakaguchi and Y. Yasuda and M. Yosoi and J. Zenihiro and H. Akimune and Z. Buthelezi and S.V. F{\"o}rtsch and R. Neveling and S.M. Perez and F.D. Smit and J. Carter and I. Usman and R.W. Fearick and U. Garg and B.K. Nayak and K. Kawase and P. Papka and J.A. Swartz and Y. Sasamoto and H. Takeda and S. Terashima and M. Uchida",

year = "2012",

month = sep,

day = "14",

doi = "10.1103/PhysRevC.86.034320",

language = "English",

volume = "86",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society (APS)",

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Freer, M, Itoh, M, Kawabata, T, Kishi, S, Murakami, T, Fujita, H, Fujiwara, M, Hashimoto, N, Nakanishi, K, Nakatsugawa, Y, Okumura, S, Sakaguchi, H, Yasuda, Y, Yosoi, M, Zenihiro, J, Akimune, H, Buthelezi, Z, Förtsch, SV, Neveling, R, Perez, SM, Smit, FD, Carter, J, Usman, I, Fearick, RW, Garg, U, Nayak, BK, Kawase, K, Papka, P, Swartz, JA, Sasamoto, Y, Takeda, H, Terashima, S & Uchida, M 2012, 'Consistent analysis of the 2 excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering', Physical Review C, vol. 86, no. 3. https://doi.org/10.1103/PhysRevC.86.034320

TY - JOUR

T1 - Consistent analysis of the 2 excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering

AU - Freer, M.

AU - Itoh, M.

AU - Kawabata, T.

AU - Kishi, S.

AU - Murakami, T.

AU - Fujita, H.

AU - Fujiwara, M.

AU - Hashimoto, N.

AU - Nakanishi, K.

AU - Nakatsugawa, Y.

AU - Okumura, S.

AU - Sakaguchi, H.

AU - Yasuda, Y.

AU - Yosoi, M.

AU - Zenihiro, J.

AU - Akimune, H.

AU - Buthelezi, Z.

AU - Förtsch, S.V.

AU - Neveling, R.

AU - Perez, S.M.

AU - Smit, F.D.

AU - Carter, J.

AU - Usman, I.

AU - Fearick, R.W.

AU - Garg, U.

AU - Nayak, B.K.

AU - Kawase, K.

AU - Papka, P.

AU - Swartz, J.A.

AU - Sasamoto, Y.

AU - Takeda, H.

AU - Terashima, S.

AU - Uchida, M.

PY - 2012/9/14

Y1 - 2012/9/14

N2 - The 12C excitation energy spectra populated in both proton and α-particle inelastic scattering measurements are examined. The data indicate the existence of a 2 state at E =9.75(0.15) MeV with a width of 750(150)keV. It is believed that this state corresponds to the 2 excitation of the 7.65 MeV, 0 , Hoyle state, which acts as the main path by which carbon is synthesized in stars. A simultaneous R-matrix analysis of the two sets of data indicates that the 2 state possesses a very large α-reduced width, approaching the Wigner limit. This would indicate that the state is associated with a highly clustered structure. The potential geometric arrangements of the clusters is discussed.

AB - The 12C excitation energy spectra populated in both proton and α-particle inelastic scattering measurements are examined. The data indicate the existence of a 2 state at E =9.75(0.15) MeV with a width of 750(150)keV. It is believed that this state corresponds to the 2 excitation of the 7.65 MeV, 0 , Hoyle state, which acts as the main path by which carbon is synthesized in stars. A simultaneous R-matrix analysis of the two sets of data indicates that the 2 state possesses a very large α-reduced width, approaching the Wigner limit. This would indicate that the state is associated with a highly clustered structure. The potential geometric arrangements of the clusters is discussed.

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U2 - 10.1103/PhysRevC.86.034320

DO - 10.1103/PhysRevC.86.034320

M3 - Article

AN - SCOPUS:84866674703

SN - 0556-2813

VL - 86

JO - Physical Review C

JF - Physical Review C

IS - 3

ER -

Consistent analysis of the 2 excitation of the 12C Hoyle state populated in proton and α-particle inelastic scattering

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Projects

Birmingham Nuclear Physics Consolidated Grant

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