Speaker
Clemens Wolf
(Goethe-University Frankfurt)
Description
The $^{23}$Al(p,$\gamma$)$^{24}$Si stellar reaction rate has a significant impact of the light-curve emitted in X-ray bursts. Theoretical calculation shows that the reaction rate is mainly determined by the properties of direct capture as well as low-lying 2$^{+}$ states and a possible 4$^{+}$ state in $^{24}$Si. Currently, there is little experimental information on the properties of these states. We present a new experimental study, using surrogate reaction $^{23}$Al(d,n) at 47 AMeV at the National Superconducting Cyclotron Laboratory (NSCL),USA.
We detect the full kinematics of the reaction, using the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) to detect the $\gamma$-rays following the de-excitation of the reaction products, the Low Energy Neutron Detector Array (LENDA) to detect the recoiling neutrons and the S800 for identification of the $^{24}$Si recoils. These information will be used to determine the highly needed properties of the $^{24}$Si. \\
This work benefited from support by the National Science Foundation under Grant No. PHY-1430152 (JINA Center for the Evolution of the Elements). The research leading to these results has received funding from the European Research Council under the European Unions's Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement n. 615126. GRETINA was funded by the DOE, Office of Science. Operation of the array at NSCL was supported by DOE under Grant No. DE-SC0014537 (NSCL) and DE-AC02-05CH11231 (LBNL). This work were supported in part by the National Science foundation under Contract No. PHY-1102511.
Primary authors
Christoph Langer
(Goethe-University, Frankfurt, Germany)
Clemens Wolf
(Goethe-University Frankfurt)
Fernando Montes
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Joge Pereira
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Co-authors
Alexandra Gade
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Brandon Elman
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Brenden Longfellow
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Chris Sullivan
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Daniel Bazin
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Dirk Weisshaar
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Eric Deleeuw
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Georgios Perdikakis
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Heather Crawford
(Lawrence Berkeley National Laboratory, Berkeley, CA, USA)
Hendrik Schatz
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Jaclyn Schmitt
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Juan Carlos Zamora
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Justine Browne
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Konrad Schmidt
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Panagiotis Gastis
(Central Michigan University, Mount Pleasant, MI, USA)
Peter Bender
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Philip Woods
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Rachel Titus
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Remco Zegers
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
René Reifarth
(Goethe-University, Frankfurt, Germany)
Samuel Lipschutz
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Sarah Ayoub
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Stefan Fiebiger
(Goethe-University, Frankfurt, Germany)
Sunghoon Ahn
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
Wie-Jia Ong
(National Superconducting Cyclotron Laboratory, East Lansing, MI, USA)
