Whereas the event rate from neutrons will be higher for lighter nuclei.
When a fast neutron collides with a light nucleus, it loses a large fraction of its energy.
Its size would be a minimum of a few femtometers across (with the mass of a light nucleus).
When two light nuclei come into very close contact with each other it is possible for the strong force to fuse the two together.
He gestured at the expanding fireball, in which traces of helium and a few other light nuclei were beginning to appear.
This is seen in light nuclei where the coulomb forces between the protons are not overwhelming.
For light nuclei with total nucleon numbers 1 to 6 only those with 5 do not show some evidence of stability.
Microfusion involves the joining of light nuclei, such as those of hydrogen.
For light nuclei, it is usually better to use a model that takes this structure into account.
Likewise, since they are more tightly bound than all lighter nuclei, energy cannot be released by fission.