## Abstract

We present a model to obtain the parameters of collisional resonances (quasibound states) in collinear A + BC reactions. The resonances are interpreted as quasibound states trapped in wells of adiabatic potential curves as functions of the minimum-energy-path coordinate. The adiabatic partial widths are obtained from semiclassical tunneling calculations. The nonadiabatic partial widths are found by using a Feshbach golden-rule formula with the decay mediated by an internal centrifugal interaction proportional to the curvature of the reaction path. Exact two-dimensional scattering calculations are then carried out and fit to the isolated-narrow-resonance formula to obtain the accurate partial widths. The model results agree well with the accurate values.

Original language | English (US) |
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Pages (from-to) | 628-636 |

Number of pages | 9 |

Journal | Journal of Physical Chemistry |

Volume | 88 |

Issue number | 3 |

DOIs | |

State | Published - Jan 1 1984 |