Recent content by New Physicist

I assume, the term "cross section" in this context refers to a measure of the probability of a nuclear fission process taking place under a unit neutron flux. How can all the fissile isotopes be known already? In any case, I don't understand how a formula for the half-lives of spontaneous...

With respect to using Lattice QCD to simulate the properties of hadrons, I would like to enquire if it's necessary to make any novel inventions before simulations of a large nucleus can be performed? From what I have gathered so far, the limitations only appears to be, ultimately, a matter of...

As I understand it, it's not yet possible to predict/calculate, from first principles, the half-lives of radiactive decays corresponding to any particular type of atomic isotope. Can anyone confirm this? I would also be interested to know the difficulties involved in achieving this goal...