Mathematically, if A decays to B, GoldSim computes the rate of change of mass (at a particular location) as follows:
dMA/dt = - MA λA
dMB/dt = MA λA RBA WB / WA
where:
MA |
= the mass of species A (mass); |
dMA/dt |
= the rate of change of species A (mass/time); |
dMB/dt |
= the rate of change of species B (mass/time); |
λA |
= decay rate of species A (1/time); |
RBA |
= stoichiometry (moles B produced per moles A decayed); |
WA |
= molecular (or atomic) weight of species A; and |
WB |
= molecular (or atomic) weight of species B. |
These equations are appropriate for first-order decay reactions.
Note: In order to model reactants, you must have the RT Module. If you are using the CT Module, you can model decay, but cannot model any reactants.
Learn more about:
Modeling Higher Order Reactions