https://doi.org/10.1140/epja/i2003-10124-1
Broad states beyond the neutron drip line
Examples of 5 H and 4 n
1
GSI, Planckstrasse 1, D-64291, Darmstadt, Germany
2
Russian Research Center “The Kurchatov Institute”, 123182, Moscow, Russia
3
Department of Physics, University of Surrey, GU2 7XH, Guildford, UK
4
Department of Physics, Chalmers University of Technology and Göteborg University, S-41296, Göteborg, Sweden
* e-mail: L.Grigorenko@gsi.de
Theoretical studies of broad states in the few-body systems beyond the neutron drip line have been performed. We introduce a theoretical model which allows to incorporate the initial structure of colliding nuclei, reaction mechanism, few-body effects and final-state interactions in studies of broad unbound states. The model is directly related to the sudden-removal approximation for high-energy knock-out or break-up reactions. We apply this model to qualitative studies of some general properties of broad few-body states including correlations for emitted fragments. The theoretical ideas are illustrated mainly using the example of 5H. The prospect for observation of broad continuum structures corresponding to the tetraneutron 4n is also discussed.
© Società Italiana di Fisica and Springer-Verlag, 2004
