? UV mutation of fungus - intensity vs duration

[Alan S. Wicks]

Greetings,

I have seen several references to using UV light to mutate
fungus.  The only question I have left regards the intensity
vs duration.  The protocols usually only mention something
generic like 'A GE germicidal lamp'.  The catalogs give me
several choices as to intensity; they range from 31 to 152
microWatts per cm^2.  Obviously this could make a dramatic
difference in the affects.

Does anyone have any ideas or good references on this?

Thanks,
Alan S. Wicks
Kennewick, WA