| Recently, tremendous progress has been made in the treatment of three-dimensional gas phase atom-diatom quantum reactive scattering. It is now possible to obtain converged quantum mechanical reaction probabilities in full 3-D for a variety of gas phase atom-diatom reactive systems. Up to now, most 3-D reactive scattering calculations have been done on using a variety of time- independent methods. There has, also, been important progress in the adaptation of time-dependent wave packet methods for 3-D quantum reactive scattering. Especially in the last few years, time-dependent wave packet methods have gained considerable importance as tools for probing surface and inelastic scattering and photodissociation processes. The time-dependent method has some powerful advantages [Computer Physics Communications 63(1991) 460-481]. First, it is an initial value problem, [Y(t) exp(Ht)Y(t = 0)] so that all numerical effort is concentrated on specific initial state of interest. The effort of calculating is especially smaller than that of time- independent method. The calculation quantity of time-independent method scales as N3 with N being the basis number, while the time- dependent method scales as N (1 |
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