Breakup time scale studied in the 8 GeV/cπ[sup -]+Au reaction.

Authors :: Pienkowski, L.
Kwiatkowski, K.
Lefort, T.
Hsi, W.-c.
Beaulieu, L.
Viola, V. E.
Botvina, A.
Back, B.
Breuer, H.
Gushue, S.
Korteling, R. G.
Laforest, R.
Martin, E.
Ramakrishnan, E.
Remsberg, L. P.
Rowland, D.
Ruangma, A.
Winchester, E.
Yennello, S. J.
Source :: AIP Conference Proceedings. 2002, Vol. 610 Issue 1, p688. 5p. 15 Diagrams.
Publication Year :: 2002
Abstract: Experimental data from the reaction of an 8.0 GeV/c π[sup -] beam incident on a [sup 197]Au target have been analyzed in order to investigate the breakup time scale for hot residues. Helium spectra supported by a momentum tensor analysis suggest that at large excitation energy, above 3–5 MeV/nucleon, highly excited heavy fragments are separated promptly after the thermalization. A binary fission-like mechanism seems unable to reproduce the data at excitation energies above 3–5 MeV/nucleon. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]