Transition from thermal to rapid expansion in multifragmentation of gold induced by light relativistic projectiles

Authors
Avdeyev, SP Karnaukhov, VA Petrov, LA Rodionov, VK Toneev, VD Oeschler, H Bochkarev, OV Chulkov, LV Kuzmin, EA Budzanowski, A Karcz, W Janicki, M Norbeck, E Botvina, AS
Citation
Sp. Avdeyev et al., Transition from thermal to rapid expansion in multifragmentation of gold induced by light relativistic projectiles, PHYS LETT B, 503(3-4), 2001, pp. 256-262
Citations number
29
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
503
Issue
3-4
Year of publication
2001
Pages
256 - 262
Database
ISI
SICI code
0370-2693(20010329)503:3-4<256:TFTTRE>2.0.ZU;2-J
Abstract
Multiple emission of intermediate-mass fragments has been studied for the c ollisions of p, He-4 and C-12 on Au with the 4 pi setup FASA. in the case o f C-12(22.4 GeV)+Au and He-4(14.6 GeV)+ Au collisions, the deviations from a pure thermal break-up are seen in the energy spectra of the emitted fragm ents: the spectra are harder than calculated and than measured in p-induced collisions. This difference is attributed to a collective flow with the ex pansion velocity on the surface about 0.1 c (for C-12 +Au collisions). (C) 2001 Published by Elsevier Science B.V.