Absorption Coefficient

[vojtech.stransky (Vojtěch Stránský)]

Dear Hajar,

the definition you wrote is correct. You can find more details in this topic (it deals with the diffusion coefficient, but the settings is simmilar):

Diffusion coefficient

Dear FLUKA expert, At the card “OPT-PROP”,if I let the type to blank,WHAT(3) is called diffusion coefficient,but I studied some literature and found this parameter’s unit is m^2/s or cm^2/s,could you tell me what it really mean?

Kind regards
Vojtěch