Wikipedia gives the following definition for critical mass. A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction.
The equation ( sin B.r)/r leads to a critical radius of 3.14 x diffusion length and far too large a figure i.e. giving critical mass 200 Kg as opposed to 50 Kg. The reason for this is that the premiss on which the Helmholtz equation was formulated is that the fission material is of infinite length and a small cross-section examined. What the first equation is saying is that the material is ...
We have all heard of critical mass for radioactive materials like Uranium, Plutonium etc. but does every element theoretically have a critical mass? If not, what determines if such a phenomena is
Critical Mass reinforces every bad stereotype drivers have about cyclists and it isn't those that participate that pay the price, it's the rest of us that have to ride on those roads who do.
If critical mass is defined by the amount of fissile material required to sustain nuclear fission. Assuming a subcritical mass object, and knowing radioactive materials can merely by chance break a...
The calculation of critical mass has an explanatory simple equation. For in excess of diametric atoms in atomic stages vary without most of things seemingly equaling the same. This however creates a value that is often a lot less than most would think and so we hence have this problem. The best way to calculate critical mass is by finding out what you are measuring and then doing it yourself.