Plasma effects for heavy ions in implanted silicon detectors have been inve
stigated for different detector characteristics as a function of type and e
nergy of the detected particles. A new approach is presented and used to re
produce the effect of the plasma delay in the timing performances. The resu
lts are in good agreement with the present data and with previous measureme
nts found in the literature. (C) 1999 Published by Elsevier Science B.V. Al
l rights reserved.