These can strike an atomic nucleus and add to it.
He had carried human knowledge far into the tiny spaces of an atomic nucleus.
The process continues as a chain reaction with other atomic nucleus.
The former also play a role holding atomic nuclei together via the residual strong force.
This causes a movement of the electrons away from the atomic nuclei.
It's got to do with high-speed reactions at the level of atomic nuclei.
In the late 1930s, he extended his research into atomic nuclei.
For a more detailed explanation of the forces inside the atomic nucleus you can read this answer as well.
Did Rutherford solve the problem of the atomic nucleus in two weeks?
We've ground the mystery down to the level of the atomic nucleus.