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The Fifth International Conference on Exotic Nuclei and Atomic Masses ENAM'08, Ryn : Pologne (2008)
Neutron correlations in 6He viewed through nuclear break-up
M. Assié1, J.A. Scarpaci1, D. Lacroix2, J.C. Angélique3, D. Bazin4, D. Beaumel1, Y. Blumenfeld1, W.N. Catford5, M. Chabot1, A. Chatterjee6, M. Fallot7, H. Iwasaki1, F. Maréchal1, D. Mengoni8, C. Monrozeau1, J. Nyberg9, C. Petrache1, F. Skaza1, T. Tuna1

The nuclear break-up of 6He on a 208Pb target was studied at 20AMeV using a secondary beam of 6He produced by the SPIRAL facility at GANIL. α-particles were detected in coincidence with two neutrons with a large angular coverage and the reaction mechanism was identified. From the distribution of the relative angles between the two neutrons the correlation function was extracted. It shows a strong correlation at small relative angles attributed to the contribution of the di-neutron configuration of 6He.
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
2 :  GANIL - Grand Accélérateur National d'Ions Lourds
3 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
4 :  National Superconducting Cyclotron Laboratory
5 :  Scholl of Electronics and Physical Sciences
6 :  Nuclear Physics Division
7 :  SUBATECH - Laboratoire SUBATECH Nantes
8 :  Dipartimento di Fisica
9 :  Department of Physics and Astronomy
Physique/Physique Nucléaire Expérimentale
Direct reactions – Nuclear reaction involving few-nucleons systems – Nuclear reaction models and methods – Break up and momentum distributions