Capture Gamma Type
- Prompt - gamma ray immediately de-exciting the neutron capture state.
- Delayed - gamma ray de-exciting a long-lived (>1 ms) level in the capure
nucleus or populated by the decay of an activation product.
Cross Section Type
- Elemental - cross section for neutron capure on element with normal abundance.
- Isotopic - cross section from neutron capture on an isotope.
PGAA k0
- Cross section relative to a standard hydrogen cross section
σ(2223)=0.3326 barns per unit mass. Defined for a gamma from element Z with atomic weight Ar(Z) as
k0(Z) = σγ(Z) / [Ar(Z)*0.3326]
Target nucleus
- Nucleus that captures the neutron.
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