U-235 is made up of two isotopes. The more common isotope, U-238, is fissionable and can be used to generate electricity. The second is U-235, which is not fissile. It takes a lot more energy to split U-235 into its components than it does to split U-238
The best way to get a slab of U-235 is to use a chemical milling process. This process involves vacuum deposition onto a rotating bed of uranium oxide, which disperses atoms in the form of U3O8. An ion-exchange reaction then takes place between the U3O8 and a lithium salt (Li2CO3), forming Li4U6Rn4 for each cycle
Once this slurry is formed, it's mixed with an acid solution to dissolve the uranium salts and form an ultrafine powder that you can use later on in your nuclear reactor or atomic bomb!
chemical milling titanium
