Introduction to Nuclear reactions
Introduction to Nuclear reactions
Introduction to Nuclear reactions
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Direct vs. Compound nuclear <strong>reactions</strong><br />
Direct: Incoming particle either<br />
scatters elastically (shape elastic) or<br />
only “grazes” target, interacting with<br />
nucleons at surface.<br />
Interaction time around 10 -22 s.<br />
Compound: A two-step process.<br />
First, incoming particle enters target<br />
and forms a compound nucleus.<br />
Then, compound nucleus ejects<br />
particle(s).<br />
Interaction time around 10 -16 s.<br />
Direct scattering “remembers”<br />
beam direction; its differential<br />
cross section is forward peaked
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