What causes nuclear fission in a collision between two neutrons?

AI Thread Summary
Colliding two neutrons typically results in one neutron passing through the other due to their lack of charge, which eliminates repulsive forces. However, the discussion raises questions about nuclear fission, specifically how a neutron can cause a nucleus to split despite the absence of direct forces. The strong nuclear force plays a critical role in this process, enabling interactions that can lead to fission. Neutrons can scatter off each other, but the likelihood of such events is low and not well measured. The conversation highlights the complexities of neutron interactions and the underlying forces at play in nuclear reactions.
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What will happen if we collide two neutrons?
As far as I know,since they have no charge, there won't be any repulsive forces. So one neutron will go through the other.:eek:
Is this true? What about nuclear fission? Why does the neutron split the nucleus when there are no forces present?
 
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Neutrons can scatter off each other but the probability is low. I don't think it's ever been accurately measured. My google-fu came up with this paper of interest: Link
 

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