  The alpha-rich freezeout from equilibrium occurs during the core-collapse
explosion of a massive star when the supernova shock wave passes through the
Si-rich shell of the star. The nuclei are heated to high temperature and broken
down into nucleons and alpha particles. These subsequently reassemble as the
material expands and cools, thereby producing new heavy nuclei, including a
number of important supernova observables. In this paper we introduce two
web-based applications. The first displays the results of a reaction-rate
sensitivity study of alpha-rich freezeout yields. The second allows the
interested reader to run paramaterized explosive silicon burning calculations
in which the user inputs his own parameters. These tools are intended to aid in
the identification of nuclear reaction rates important for experimental study.
We then analyze several iron-group isotopes (59Ni, 57Co, 56Co, and 55Fe) in
terms of their roles as observables and examine the reaction rates that are
important in their production.
