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

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
, H. Fujita
, H. Akimune
, Z. Buthelezi
, J. Carter
, R.W. Fearick
, S.V. Förtsch
, M. Fujiwara
, U. Garg
, N. Hashimoto
, K. Kawase
, S. Kishi
, T. Murakami
, K. Nakanishi
, Y. Nakatsugawa
, B.K. Nayak
, R. Neveling
, S. Okumura

S.M. Perez, P. Papka, H. Sakaguchi, Y. Sasamoto, F.D. Smit, J.A. Swartz, H. Takeda, S. Terashima, M. Uchida, I. Usman, Y. Yasuda, M. Yosoi, J. Zenihiro

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

72 Citations (Scopus)

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_𝑥= 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
Article number	034320
Number of pages	6
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. (Principal Investigator), Evans, P. (Co-Investigator), Jones, P. (Co-Investigator), Wheldon, C. (Co-Investigator) & Lazzeroni, C. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/11 → 31/07/14
Project: Research Councils

Cite this

Freer, M., Itoh, M., Kawabata, T., Fujita, H., Akimune, H., Buthelezi, Z., Carter, J., Fearick, R. W., Förtsch, S. V., Fujiwara, M., Garg, U., Hashimoto, N., Kawase, K., Kishi, S., Murakami, T., Nakanishi, K., Nakatsugawa, Y., Nayak, B. K., Neveling, R., ... Zenihiro, J. (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), Article 034320. 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 𝐸𝑥 = 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 H. Fujita and H. Akimune and Z. Buthelezi and J. Carter and R.W. Fearick and S.V. F{\"o}rtsch and M. Fujiwara and U. Garg and N. Hashimoto and K. Kawase and S. Kishi and T. Murakami and K. Nakanishi and Y. Nakatsugawa and B.K. Nayak and R. Neveling and S. Okumura and S.M. Perez and P. Papka and H. Sakaguchi and Y. Sasamoto and F.D. Smit and J.A. Swartz and H. Takeda and S. Terashima and M. Uchida and I. Usman and Y. Yasuda and M. Yosoi and J. Zenihiro",

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)",

number = "3",

}

Freer, M, Itoh, M, Kawabata, T, Fujita, H, Akimune, H, Buthelezi, Z, Carter, J, Fearick, RW, Förtsch, SV, Fujiwara, M, Garg, U, Hashimoto, N, Kawase, K, Kishi, S, Murakami, T, Nakanishi, K, Nakatsugawa, Y, Nayak, BK, Neveling, R, Okumura, S, Perez, SM, Papka, P, Sakaguchi, H, Sasamoto, Y, Smit, FD, Swartz, JA, Takeda, H, Terashima, S, Uchida, M, Usman, I, Yasuda, Y, Yosoi, M & Zenihiro, J 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, 034320. 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 - Fujita, H.

AU - Akimune, H.

AU - Buthelezi, Z.

AU - Carter, J.

AU - Fearick, R.W.

AU - Förtsch, S.V.

AU - Fujiwara, M.

AU - Garg, U.

AU - Hashimoto, N.

AU - Kawase, K.

AU - Kishi, S.

AU - Murakami, T.

AU - Nakanishi, K.

AU - Nakatsugawa, Y.

AU - Nayak, B.K.

AU - Neveling, R.

AU - Okumura, S.

AU - Perez, S.M.

AU - Papka, P.

AU - Sakaguchi, H.

AU - Sasamoto, Y.

AU - Smit, F.D.

AU - Swartz, J.A.

AU - Takeda, H.

AU - Terashima, S.

AU - Uchida, M.

AU - Usman, I.

AU - Yasuda, Y.

AU - Yosoi, M.

AU - Zenihiro, J.

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 𝐸𝑥 = 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 𝐸𝑥 = 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.

UR - https://www.scopus.com/pages/publications/84866674703

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

M1 - 034320

ER -

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

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Birmingham Nuclear Physics Consolidated Grant

Cite this

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