Light charged particle and neutron velocity spectra in coincidence with projectile fragments in the reaction Ar-40(44 A MeV)+Al-27

We present a three source analysis of velocity spectra of light charged par ticles (LCP) and neutrons emitted in the reaction Ar-40 + Al-27 at 44 A MeV . The light particle (LP) velocity spectra are studied as a function of the detection angle (1.5 degrees < <theta> < 1'72<degrees>) and of the charge of the forward detected projectile-like fragment (PLF). The temperature par ameter, the velocity and the intensity of each source are extracted as a fu nction of the PLF charge. While the temperature parameters for PLF and targ et-like fragments (TLF) are very similar and show a dependence on the PLF c harge, the temperature parameter for the intermediate source is approximate ly 15 MeV, independent of the PLF charge. Comparison with temperature value s extracted from double isotopic ratios, shows an agreement only between th e temperature values extracted from formula involving He-3, H-4, d, t ratio s and the PLF proton temperature parameter. The characteristics of the PLF sources are derived. Present results are discussed with regards to the degr ee of thermalization which could be achieved in the PLF and TLF sources. (C ) 2001 Elsevier Science:B.V. All rights reserved.