Building a box lined with aluminum foil and mounting this in the top of the box is probably the best way to disinfect things quickly.
For a half sphere falloff:
$36 mW /(4 pi * (32 cm)^2/2) * 15*60 seconds = 5 mJ/cm^2$ - $36 mW /(4 pi * (100 cm)^2/2) * 2.56060 seconds = 5.157mJ/cm^2$
- $36 mW /(4 pi * (200 cm)^2/2) * 106060 seconds = 5.157mJ/cm^2$
power | 1.25 mJ/cm^2 | 2.5 mJ/cm^2 | 3.75 mJ/cm^2 | 5 mJ/cm2 |
---|---|---|---|---|
time at 1.25 mW/cm^2 | 1 second | 2 seconds | 3 seconds | 4 seconds |
260 nm | 2.6 | |||
268 nm | 0.7 | 1.2 | 1.5 | 2.8 |
270 nm | 2.8 |
Aluminum foil has a reflectivity of 73% for UVC light.