HibridonTM 4.1.4

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This is the home page and hypertext help facility for HibridonTM, a program package to solve the close-coupled equations which occur in the quantum treatment of inelastic atomic and molecular collisions. Gas-phase scattering, photodissociation, collisions of atoms and/or molecules with flat surfaces, and bound states of weakly-bound complexes can be treated. Although this hypertext help contains some general formal material, we assume here that you have some background with the quantum theory of inelastic scattering.
New additions
At present the HibridonTM package can be installed on the following machines:

IBM RS/6000 workstations running under AIX 3.2.5, 4.1.3, 4.1.4, 4.2, 4.3
HP 9000 series workstations running under HPUX 9.03, 10.01, 10.2, 11.0
DEC Alpha workstations running under OSF 41.64
SGI workstations running under IRIX 5.2 and 6.5
Sun workstations running under SunOS 5.5.1 and 5.7
The HP (10.2 and 11.0) and IBM (4.3) versions are actively maintained;those on the other platforms are maintained on a less regular basis
You can obtain a copy of the HibridonTM package as
a compressed tar archive in binary format (1.6 MB)
a UUencoded compressed tar archive in ascii format (2.3 MB)


This hypertext help facility will guide you in the installation and application of HibridonTM. To ensure the proper display of special characters, your ASCII encoding should be set to ISO 8859-1 (Latin-1) Characters.

If your WEB browser does not support Netscape's frames, then go to to open a second browser window with an index of all available help links.

Throughout these hypertext links, words in Typewriter Font denote names of input parameters, variables, files, and directories. Names that are enclosed in braces (for example, {name}) can take on different values. Bold face is used for extra emphasis. Also, please take special note of all comments and instructions which follow the “warning” and “take notice” signs


Installation instructions for the HibridonTM package are available here Installation also creates your own copy of these hypertext help files.
Calculations on any particular collision system involve linking several system specific subroutines which define the interaction potential energy surface(s) together with a large number of general routines, which have be compiled previously.
Execution of the HibridonTM package is controlled by the Hibridon driver.
A number of examples have been prepared to help you learn how to use the HibridonTM package. These are particularly instructive once you have had an initial exposure to this help library.
The HibridonTM package was written by M. H. Alexander, D. E. Manolopoulos, H.-J. Werner, and B. Follmeg, with contributions by P. F. Vohralik, D. Lemoine, G. Corey, R. Gordon, B. Johnson, T. Orlikowski, A. Berning, A. Degli-Esposti, C. Rist, P. Dagdigian, B. Pouilly, G. van der Sanden, M. Yang, F. de Weerd, and S. Gregurick. Support for its development was provided by grants (to MHA) from the U. S. National Science Foundation, the U. S. Army Research Office, the Office of Scientific Research of the U. S. Air Force, and (to HJW) from the German Fonds der Chemische Industrie. Copyright (c) 1987, 1991, 1993, 1996, 2003, University of Maryland at College Park. All rights reserved.
For further inquiries

This version of Hibridon is dedicated to the memories of Sheldon Green and Peter Andresen, whose untimely deaths robbed us of two wonderful scientists who both made long-lasting and invaluable contributions to the field of inelastic molecular collisions. Ave atque vale.

Current Revision of this help library: 5-april-2003
Applicable version of HibridonTM: 4.1.5


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