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Designing Networks

This section covers everything you need to know to write and structure chemical reaction networks for JAFF.

  • Network Formats

    JAFF supports five established astrochemical network formats. Learn the syntax, field layout, and auto-detection rules for each.

    Network Formats

  • Auxiliary Function Files

    Extend a network with custom rate coefficients and heating/cooling functions using .jfunc files and the @var / @function directives.

    Auxiliary Functions

  • Photochemistry

    Understand how JAFF handles photodissociation and photoionisation reactions, from cross-section databases to radiation field integration.

    Photochemistry