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First direct measurement of 12C (12C,n) 23Mg at stellar energies

Tang, X.D.; Bucher, B.; Fang, X.; Heger, A.; Almaraz-Calderon, S.; Alongi, A.; Ayangeakaa, A.D.; Beard, M.; Best, A.; Browne, J.; Cahillane, C.; Couder, M.; DeBoer, R.J.; Kontos, A.; Lamm, L.; Li, Y.J.; Long, A.; Lu, W.; Lyons, S.; Notani, M.; Patel, D.; Paul, N.; Pignatari, M.; Roberts, A.; Robertson, D.; Smith, K.; Stech, E.; Talwar, R.; Tan, W.P.; Wiescher, M.; Woosley, S.E.


X.D. Tang

B. Bucher

X. Fang

A. Heger

S. Almaraz-Calderon

A. Alongi

A.D. Ayangeakaa

M. Beard

A. Best

J. Browne

C. Cahillane

M. Couder

R.J. DeBoer

A. Kontos

L. Lamm

Y.J. Li

A. Long

W. Lu

S. Lyons

M. Notani

D. Patel

N. Paul

M. Pignatari

A. Roberts

D. Robertson

K. Smith

E. Stech

R. Talwar

W.P. Tan

M. Wiescher

S.E. Woosley


W.-P. Liu

Z.-H. Li

Y.-B. Wang

B. Guo

Y.-P. Shen


© 2016 Owned by the authors, published by EDP Sciences. Neutrons produced by the carbon fusion reaction12C(12C,n)23Mg play an important role in stellar nucleosynthesis. Past studies have shown large discrepancies between experimental data and theory, leading to an uncertain cross section extrapolation at astrophysical energies. We present the first direct measurement which extends deep into the astrophysical energy range along with a new and improved extrapolation technique based on experimental data from the mirror reaction12C(12C,p)23Na. The new reaction rate has been determined with a well-defined uncertainty which exceeds the precision required by astrophysics models. Using our constrained rate, we find that12C(12C,n)23Mg is crucial to the production of Na and Al in Pop-III Pair Instability Supernovae.


Tang, X., Bucher, B., Fang, X., Heger, A., Almaraz-Calderon, S., Alongi, A., …Woosley, S. (2016). First direct measurement of 12C (12C,n) 23Mg at stellar energies. EPJ Web of Conferences, 109, 04009.

Journal Article Type Article
Acceptance Date Jan 1, 2016
Online Publication Date Feb 12, 2016
Publication Date Feb 12, 2016
Deposit Date Jul 16, 2018
Publicly Available Date Jul 16, 2018
Journal EPJ Web of Conferences
Print ISSN 2100-014X
Electronic ISSN 2100-014X
Publisher EDP Sciences
Peer Reviewed Peer Reviewed
Volume 109
Article Number 04009
Pages 04009
Public URL
Publisher URL


Article (178 Kb)

Copyright Statement
&copy; Owned by the authors, published by EDP Sciences, 2016<br /> This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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