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Physics Letters B 476 (2000) 219-225
Two-neutron interferometry as a probe of the nuclear halo
F.M. Marqués1, M. Labiche1, N.A. Orr1, J.C. Angélique1, L. Axelsson, B. Benoit, U.C. Bergmann, M.J.G. Borge, W.N. Catford, S.P.G. Chappell, N.M. Clarke, G. Costa, N. Curtis, A. D'Arrigo, F. de Oliveira Santos, E. de Goes Brennard, O. Dorvaux2, M. Freer, B.R. Fulton, G. Giadina, C. Gregori, S. Grévy1, D. Guillemaud-Mueller3, F. Hanappe1, B. Heusch2, B. Jonson, C. Le Brun1, S. Leenhardt, M. Lewitowicz, M.J. Lopez, K. Markenroth, M. Motta, A.C. Mueller, T. Nilsson, A. Ninane, G. Nyman, O. Sorlin, I. Piqueras, K. Riisager, M.G. Saint-Laurent, F. Sarazin, S.M. Singer, L. Stuttge2

The technique of intensity interferometry is proposed as a probe of the spatial configuration of two-neutron haloes. After exploring the sensitivity of interferometry to the n-n configuration, it is demonstrated that the application of the standard method for constructing the correlation function is not valid for halo neutrons. A new iterative method is presented and applied to measurements of the dissociation of 6He, 11Li and 14Be. The correlation functions for these systems have thus been extracted for the first time and the corresponding root-mean-square n-n separations estimated. The results are in agreement with the predictions of available three-body models.
1 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
2 :  IReS - Institut de Recherches Subatomiques
3 :  IPNO - Institut de Physique Nucléaire d'Orsay
Structure nucléaire
Physique/Physique Nucléaire Expérimentale