Speaker
Gloria Marquínez-Durán
(University of Huelva, Spain)
Description
The scattering of 8He has attracted the interest of the scientific community due to its particular features. Being a skin nucleus with four valence neutrons and similar binding energies for 1n and 2n, it is very different from 2n halo 6He where the breakup into α+2n is favored. The differences of both helium isotopes are expected to be reflected in the elastic and reaction cross sections for collisions with heavy targets at Coulomb barrier energies.
In order to investigate the dynamics of 8He we performed an experiment at SPIRAL/GANIL facility (Caen, France), as part of a large experimental project devoted to study radioctive light isotopes by means of nuclear reactions induced at energies around the Coulomb barrier [1-4]. In this contribution elastic 8He and 6,4He fragments angular distributions produced in collisions of 8He with a 208Pb target at 22 MeV are presented and discussed together with calculations carried out for transfer and break-up processes.
The analysis of the experimental data performed so far has shown that the angular distribution of the 8He elastic scattering follows the trend of 6He up to the scattering angles around 80º. For larger angles the absorption becomes even greater what could be interpreted as an effect of 1n transfer reaction.
[1] A. M. Sánchez-Benítez et al. Nucl. Phys. A, 803:30, 2008.
[2] L. Acosta et al. Phys. Rev. C, 84, 044604, 2011.
[3] L. Acosta et al. Eur. Phys. J. A 42 , 461, 2009.
[4] M. Cubero, J.P. Fernández-García et al. EPJ
Primary authors
Gloria Marquínez-Durán
(University of Huelva, Spain)
Dr
Ismael Martel
(University of Huelva, Spain)
Dr
Krzysztof Rusek
(Heavy Ion Laboratory, University of Warsaw, Poland)
Dr
Luis Acosta
(Laboratori Nazionali del Sud, INFN Catania, Italy)
Dr
Ángel Miguel Sánchez-Benítez
(University of Huelva, Spain)
Co-authors
Dr
A. Chbihi
(GANIL, France)
Dr
A. Pakou
(Department of Physics, The University of Ioannina, Greece)
Dr
A.H. Ziad
(CNA, Spain)
Mr
C. Cruz
(IEM CSIC, Madrid, Spain)
Dr
D. Pierroutsakou
(INFN - Sezione di Napoli, Italy)
Ms
I. Strojek
(National Centre for Nuclear Research, Poland)
Dr
J. Dueñas.
(University of Huelva, Spain)
Dr
J. Gómez-Camacho
(University of Sevilla and CNA, Spain)
Mr
J.A. Labrador
(CNA, Spain)
Mr
J.L. Flores
(University of Huelva, Spain)
Mr
J.P. Fernández-García
(University of Sevilla, Spain)
Mr
L. Standylo
(National Centre for Nuclear Research, Poland)
Mr
M. Cubero
(IEM CSIC, Madrid, Spain)
Dr
M. Marques
(Laboratoire de Physique Corpusculaire, Caen, France)
Dr
M. Mazzocco
(Dip. di Fisica and INFN Padova, Italy)
Dr
M.A.G. Álvarez
(University of Sevilla and CNA, Spain)
Dr
M.J.G. Borge
(IEM CSIC, Madrid, Spain)
Dr
N. Keeley
(National Centre for Nuclear Research, Poland)
Dr
N. Patronis
(Department of Physics, The University of Ioannina, Greece)
Dr
N. Soic
(Rudjer Boskovic Institute, Zagreb, Croatia)
Dr
O. Tengblad
(IEM CSIC, Madrid, Spain)
Mr
R. Berjillos
(University of Huelva, Spain)
Dr
R. Raabe
(Instituut voor Kern-en Stralingsfysica, K.U.Leuven, Belgium)
Dr
R. Silvestri
(INFN - Sezione di Napoli, Italy)
Dr
R. Wolski
(Institute of Nuclear Physics PAS, Krakow, Poland)
Mr
V. Pesudo
(IEM CSIC, Madrid, Spain)
Dr
V.V. Parkar
(University of Huelva, Spain)
