Speaker
Beatriz Fernandez-Dominguez
(Universidade de Santiago de Compostela)
Description
The structure of nuclei at and beyond the proton-drip line is important in the understanding of the rapid proton capture nucleosynthethic process (rp process). Knowledge of the nuclear properties in the light proton drip line region Z~13 are key inputs to network calculations of the rp-path. However, little spectroscopic information is known about the structure of 21Al which is proton unbound. Up to now only an upper limit of the lifetime of the unbound ground state has been measured [1].
Here we present the asymptotic normalization coefficients (ANCs) for mirror states in 21Al obtained from the neutron transfer reaction 20O(d,p)21O at 10.53 AMeV [2] and using proton resonance energies obtained from microscopic calculations. The analysis shows that the neutron stripping to the ground and first excited state of 21O is rather peripheral enabling the prediction of proton widths in 21Al using the mirror symmetry.
M. G. Saint-Laurent, et al., Phys. Rev. Lett 59, 33 (1987).
B. Fernandez-Dominguez, et al., Phys. Rev. C 84, 011301(R) (2011).
Primary authors
Beatriz Fernandez-Dominguez
(Universidade de Santiago de Compostela)
Dr
Natasha Timofeyuk
(Department of Physics, University of Surrey, Surrey GU2 7XH, UK)
Co-authors
Dr
Franck Delaunay
(LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen, France)
Dr
Jeff Thomas
(Department of Physics, University of Surrey, Surrey GU2 7XH, UK)
Dr
Nigel Orr
(LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14050 Caen, France)
Dr
Pierre Descouvemont
(Physique Nucléaire Théorique et Physique Mathématique, CP229, Université Libre de Bruxelles, B-1050 Brussels, Belgium)
Dr
Wilton Catford
(Department of Physics, University of Surrey, Surrey GU2 7XH, UK)
