Collinear reaction probabilities, and differential and integral cross
sections for the reaction He + H-2(+) --> HeH++ H in three dimensions
have been computed using a new analytic fit of the ah initio potential
-energy Values for the system and compared with those obtained using a
n earlier reported fit and also with the available experimental result
s. While the results on the two fitted surfaces are indistinguishable
from each other for many of the reaction attributes for different init
ial vibrational (upsilon) states of H-2(+) over a range of relative tr
anslational energy of reactants, there are some noticeable differences
between them for the reaction from the upsilon = 1 state of H-2(+). (
C) 1998 Published by Elsevier Science B.V. Ail rights reserved.