FLUX.md¶

FLUX flux2

This keyword enables the total energy-integrated projectile flux (per square cm per second) to be specified for a particular time interval. Note that if several consecutive time intervals require the same flux value, it need be entered only once for these intervals. Setting a total flux value equal to 0 gives a purely decay time-step, but flux must be set to a non-zero positive value before the first irradiation step and must be set to zero before using the ZERO keyword.

Example usage, where the flux is set to 1.0E10, then 1.0E5 and then 0.0 particles per cm squared per second:

< -- Control phase -- >
...
CUMFYLD
FISPACT
* Title of the simulation
< -- Initial phase -- > 
...
FLUX 1.0E10
ATOMS
 < -- Inventory phase -- > 
TIME 1.0 HOURS
ATOMS
FLUX 1.0E5
TIME 1.0 HOURS 
ATOMS
FLUX 0.0
ZERO
<< cooling periods >>
TIME 1.0 HOURS
ATOMS
...