# 7.17.1.32.7. Lumped_Exponential

Syntax

  Source For Neutron ([{of} SpeciesName] | [{in} MaterialPhaseName] | [{ls} {a | b | c}]) {@ | at | for | on | over} MeshPartIdentifier = Lumped_Exponential (Variable = variable | [Constant = constant] | [Multiplier = multiplier] | Exponent = exponent)

Summary

  Value from an exponential function

Parameter | Value | Default
--- | --- | ---
{of} | {of | species | subindex} | –
SpeciesName | string | –
{in} | {in | material_phase} | –
MaterialPhaseName | string | –
{ls} | {levelset_phase | ls} | –
MeshPartIdentifier | string | –
variable | “string” | –
constant | real | 0
multiplier | real | 1
exponent | real | –