Author/Authors :
S.P Avdeyev، نويسنده , , V.A. Karnaukhov، نويسنده , , L.A Petrov، نويسنده , , V.K Rodionov، نويسنده , , V.D. Toneev، نويسنده , , H Oeschler، نويسنده , , O.V. Bochkarev، نويسنده , , L.V. Chulkov، نويسنده , , E.A Kuzmin، نويسنده , , A Budzanowski، نويسنده , , W Karcz، نويسنده , , M Janicki، نويسنده , , E Norbeck، نويسنده , , A.S Botvina، نويسنده ,
Abstract :
Multiple emission of intermediate-mass fragments has been studied for the collisions of p, 4He and 12C on Au with the 4π setup FASA. In the case of 12C(22.4 GeV) + Au and 4He(14.6 GeV) + Au collisions, the deviations from a pure thermal break-up are seen in the energy spectra of the emitted fragments: the spectra are harder than calculated and than measured in p-induced collisions. This difference is attributed to a collective flow with the expansion velocity on the surface about 0.1 c (for 12C + Au collisions).
