Gunn was key in development of liquid thermal diffusion methods for separating of uranium isotopes for the Manhattan project.
Fine bubble diffusers are typically the more cost-efficient diffusion method, however, plugging is typically a problem due to sediment settling into the smaller air holes.
I forgot to mention, if you Google "concave diffuser" you will find lots of other tests and uses of this diffusion method.
K-25 is a former uranium enrichment facility of the Manhattan Project which used the gaseous diffusion method.
The gaseous diffusion method enriches uranium by separating uranium-235 from uranium-238.
TV's main diffusion methods are via its website and via YouTube.
Most importantly, they developed the gaseous diffusion method to separate uranium-235 from uranium-238.
The gas centrifuge was developed to replace the gaseous diffusion method of uranium-235 extraction.
The problem with the diffusion method is that it takes 15 to 20 minutes of scanning to get the data.
Magnetic separation was later abandoned in favor of the more complicated, but more effective, gaseous diffusion method.
