RxnProcessThe RxnProcess block sets the reactants and products
for a particular reaction. The reactants and products can
be any combination of Fluids or
Kinetically Modeled Particle Species.
This block points to a RxnPhysics Block which will determine the physics of the reaction, i.e., whether the interaction is an ionization, scattering, dissociation, or an other type of process. See RxnProductGenerator for a list of supported processes.
Note
For some processes, the order that the reactants and products
are written in the Reactants and Products lists
below is important. Check the documentation for the ProductGenerator
to determine whether the reactants and products need to be written in a
particular order.
kind (string, required)The kind will always be collisionProcess
Reactants (list of strings, required)A list, enclosed by square brackets, of the names of the reacting species. Can be any fluid or kinetically modeled species. Order is important for some reactions. Find the reaction in RxnProductGenerator for information on ordering.
Products (list of strings, required)A list, enclosed by square brackets, of the names of the product species. Can be any fluid or kinetically modeled species. Order is important for some reactions. Find the reaction in RxnProductGenerator for information on ordering.
rxnPhysics (string, required)This string points to a name of a RxnPhysics Block.
The RxnPhysics block determines the physics properties of
the RxnProcess.
verbosity (int, optional)A verbosity setting determines the level of output messaging provided by the engine. If no value is provided the top level verbosity will be used (see Global Variables). If a value is provided in this block it will overwrite the top level verbosity. A verbosity setting of 127 or lower will show the number of reactions that occur. A setting of 128 or larger will suppress the number of reactions.
randomSeed (int, optional, default: random int)Manually set the random seed used in the selection of reactant particles.
The default is to choose a random seed at run time. To produce identical simulations, advanced users may want to manually set a seed. It is recommended not to include this parameter so that a different random number will be generated for each run.
<RxnProcess impactElasticPrimaryElectrons>
kind = collisionProcess
reactants = [electrons neutralArgon]
products = [electrons neutralArgon]
rxnPhysics = impactElasticPrimaryElectronsbinaryElastic
#verbosity = 127
#randomSeed = 423
</RxnProcess>