Nuclear halo effects in neutron-capture reactions of astrophysical interest

Abstract

The halo effect in the final states of astrophysically relevant direct neutron--capture reactions by neutron--rich nuclei is discussed. As an example, we calculate the cross sections for $^{18}$O(n,$γ$)$^{19}$O at thermonuclear and thermal energies.

4 pages, 2 postscript figures, uses psfig.sty, to be published in Proceedings of the Eigth Workshop in Nuclear Astrophysics, 22.-27. March 1996, Ringberg Castle, Bad Wiessee, W. Hillebrandt and H. Müller (ed.), uuencoded postscript and tex-files available at ftp://is1.kph.tuwien.ac.at/pub/ohu/Ringberg.uu