After the H-bomb was made, reporters started to call Teller the father of the H-bomb. For the sake of history, I think it is more precise to say that Ulam is the father, because he provided the seed, and Teller is the mother, because he remained with the child. As for me, I guess I am the midwife.Hans Bethe
This page is essentially a graphical version of the Range-Energy Calculator: It computes stopping power and kinetic energy as a function of target depth.
Charged Particle Passage through Matter
This program provides stopping power and kinetic energy as a function of depth for a specified projectile-target combination.