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##

Reaction Probabilities

In Fig. 1 we show the total reaction probabilities, , for all that we have computed. The most obvious feature of
this plot is the monotonic decline in with increasing
at nearly every energy. In Fig. 2, we show the reaction
probability for . Except for the structure caused by the
overlapping resonances, the reaction probabilities increase in a
nearly linear fashion with increasing energy. Similar to , all
trace of the rapid rise in reaction probability at eV, so
evident at has totally disappeared.[2] It is also
clear from Fig. 2 that averaging over will greatly
dampen any resonance structure that persists at total higher angular
momentum. Another important feature of the reaction probability profiles that
is shown clearly in Fig. 2 is the absence of any ``energy shift''
resulting from centrifugal barriers. At each , the reaction occurs at the
threshold energy of eV, indicating that the coriolis terms
are as important as the centrifugal ones. This point will be discussed
further in a future article.[51]

In Fig. 3, we plot the total reaction probabilities but *weighted by the degeneracy factor*. This plot gives a very different
indication of the importance of the contribution of each partial wave to
the overall reaction cross section than one might get from a casual glance
at Fig. 1. We see that the contribution of is negligible.
Moreover, the importance of each partial wave increases with until
reaching a maximum near . For eV the weighted
reaction probability for and are similar with being
greater for eV.

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Anthony J. H. M. Meijer
2000-10-05