Excited states of 12C above the alpha-decay threshold

M. Freer; S. Almaraz-Calderon; A. Aprahamian; I. Ashwood; M. Barr; B. Bucher; P. Copp; M. Couder; N. Curtis; X. Fang; F. Jung; S. Lesher; W. Lu; D. Malcolm; A. Roberts; P. Tan; C. Wheldon; A. Ziman

doi:10.1088/1742-6596/321/1/012036

Excited states of 12C above the alpha-decay threshold

M. Freer
, S. Almaraz-Calderon
, A. Aprahamian
, I. Ashwood
, M. Barr
, B. Bucher
, P. Copp
, M. Couder
, N. Curtis
, X. Fang
, F. Jung
, S. Lesher
, W. Lu
, D. Malcolm
, A. Roberts
, P. Tan
, C. Wheldon
, A. Ziman

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The excitation energy spectrum of 12C is important for both structural and astrophysical reasons; here we present evidence for a new state in 12C. The two reactions 12C(4He, 4He+4He+4He)4He and 9Be(4He,4He+4He+4He)n were measured using an array of four double sided strip detectors. Excited states in 12C were reconstructed filtered by the condition that the alpha-decay proceeded via the 8Be ground-state. In both measurements evidence was found for a new state at 13.3(0.2) MeV with a width 1.7(0.2) MeV. Angular correlation measurements from the 12C(4He, 4He+4He+4He)4He reaction indicates that the state may have J π=4+. © Published under licence by IOP Publishing Ltd.

Original language	English
Title of host publication	International EFES-IN2P3 Conference on "Many Body Correlations from Dilute to Dense Nuclear Systems", MBC 2011
Volume	321
DOIs	https://doi.org/10.1088/1742-6596/321/1/012036
State	Published - 2011

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Freer, M., Almaraz-Calderon, S., Aprahamian, A., Ashwood, I., Barr, M., Bucher, B., Copp, P., Couder, M., Curtis, N., Fang, X., Jung, F., Lesher, S., Lu, W., Malcolm, D., Roberts, A., Tan, P., Wheldon, C., & Ziman, A. (2011). Excited states of 12C above the alpha-decay threshold. In International EFES-IN2P3 Conference on "Many Body Correlations from Dilute to Dense Nuclear Systems", MBC 2011 (Vol. 321) https://doi.org/10.1088/1742-6596/321/1/012036

@inproceedings{b7ccf7b85cb94ea7a13b67c245067bb5,

title = "Excited states of 12C above the alpha-decay threshold",

abstract = "The excitation energy spectrum of 12C is important for both structural and astrophysical reasons; here we present evidence for a new state in 12C. The two reactions 12C(4He, 4He+4He+4He)4He and 9Be(4He,4He+4He+4He)n were measured using an array of four double sided strip detectors. Excited states in 12C were reconstructed filtered by the condition that the alpha-decay proceeded via the 8Be ground-state. In both measurements evidence was found for a new state at 13.3(0.2) MeV with a width 1.7(0.2) MeV. Angular correlation measurements from the 12C(4He, 4He+4He+4He)4He reaction indicates that the state may have J π=4+. {\textcopyright} Published under licence by IOP Publishing Ltd.",

author = "M. Freer and S. Almaraz-Calderon and A. Aprahamian and I. Ashwood and M. Barr and B. Bucher and P. Copp and M. Couder and N. Curtis and X. Fang and F. Jung and S. Lesher and W. Lu and D. Malcolm and A. Roberts and P. Tan and C. Wheldon and A. Ziman",

year = "2011",

doi = "10.1088/1742-6596/321/1/012036",

language = "English",

volume = "321",

booktitle = "International EFES-IN2P3 Conference on {"}Many Body Correlations from Dilute to Dense Nuclear Systems{"}, MBC 2011",

}

Freer, M, Almaraz-Calderon, S, Aprahamian, A, Ashwood, I, Barr, M, Bucher, B, Copp, P, Couder, M, Curtis, N, Fang, X, Jung, F, Lesher, S, Lu, W, Malcolm, D, Roberts, A, Tan, P, Wheldon, C & Ziman, A 2011, Excited states of 12C above the alpha-decay threshold. in International EFES-IN2P3 Conference on "Many Body Correlations from Dilute to Dense Nuclear Systems", MBC 2011. vol. 321. https://doi.org/10.1088/1742-6596/321/1/012036

TY - GEN

T1 - Excited states of 12C above the alpha-decay threshold

AU - Freer, M.

AU - Almaraz-Calderon, S.

AU - Aprahamian, A.

AU - Ashwood, I.

AU - Barr, M.

AU - Bucher, B.

AU - Copp, P.

AU - Couder, M.

AU - Curtis, N.

AU - Fang, X.

AU - Jung, F.

AU - Lesher, S.

AU - Lu, W.

AU - Malcolm, D.

AU - Roberts, A.

AU - Tan, P.

AU - Wheldon, C.

AU - Ziman, A.

PY - 2011

Y1 - 2011

N2 - The excitation energy spectrum of 12C is important for both structural and astrophysical reasons; here we present evidence for a new state in 12C. The two reactions 12C(4He, 4He+4He+4He)4He and 9Be(4He,4He+4He+4He)n were measured using an array of four double sided strip detectors. Excited states in 12C were reconstructed filtered by the condition that the alpha-decay proceeded via the 8Be ground-state. In both measurements evidence was found for a new state at 13.3(0.2) MeV with a width 1.7(0.2) MeV. Angular correlation measurements from the 12C(4He, 4He+4He+4He)4He reaction indicates that the state may have J π=4+. © Published under licence by IOP Publishing Ltd.

AB - The excitation energy spectrum of 12C is important for both structural and astrophysical reasons; here we present evidence for a new state in 12C. The two reactions 12C(4He, 4He+4He+4He)4He and 9Be(4He,4He+4He+4He)n were measured using an array of four double sided strip detectors. Excited states in 12C were reconstructed filtered by the condition that the alpha-decay proceeded via the 8Be ground-state. In both measurements evidence was found for a new state at 13.3(0.2) MeV with a width 1.7(0.2) MeV. Angular correlation measurements from the 12C(4He, 4He+4He+4He)4He reaction indicates that the state may have J π=4+. © Published under licence by IOP Publishing Ltd.

UR - https://dx.doi.org/10.1088/1742-6596/321/1/012036

U2 - 10.1088/1742-6596/321/1/012036

DO - 10.1088/1742-6596/321/1/012036

M3 - Conference contribution

VL - 321

BT - International EFES-IN2P3 Conference on "Many Body Correlations from Dilute to Dense Nuclear Systems", MBC 2011

ER -

Excited states of 12C above the alpha-decay threshold

Abstract

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