EPJ Web of Conferences (Jan 2016)
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.
Affiliations
- Tang X.D.
- Institute of Modern Physics, Chinese Academy of Science
- Bucher B.
- Fang X.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Heger A.
- Almaraz-Calderon S.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Alongi A.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Ayangeakaa A.D.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Beard M.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Best A.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Browne J.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Cahillane C.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Couder M.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- deBoer R.J.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Kontos A.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Lamm L.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Li Y.J.
- China Institute of Atomic Energy
- Long A.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Lu W.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Lyons S.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Notani M.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Patel D.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Paul N.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Pignatari M.
- Roberts A.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Robertson D.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Smith K.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Stech E.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Talwar R.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Tan W.P.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Wiescher M.
- Institute for Structure and Nuclear Astrophysics, Joint Institute for Nuclear Astrophysics, University of Notre Dame
- Woosley S.E.
- Department of Astronomy and Astrophysics, University of California
- DOI
- https://doi.org/10.1051/epjconf/201610904009
- Journal volume & issue
-
Vol. 109
p. 04009
Abstract
Neutrons produced by the carbon fusion reaction 12C(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 reaction 12C(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 that 12C(12C,n)23Mg is crucial to the production of Na and Al in Pop-III Pair Instability Supernovae.
