Page 63 - bukuneutron

Gamma Neutron Activation Analysis (PGNAA) and the
later is called Delayed Gamma Neutron Activation Anal-
ysis, as widely considered as NAA. However, this chap-
ter limits ourself on conventional approach of nuclear
interactions where activated material will emitted sec-
ondry radiation immediately when interacted with neu-
tron or emmitted secondary with some delayed.

3.1 Principle of Neutron Activation

Each element in a material is characterised by the nu-
clie of the atom where the materials are contained. If
the element is X , then the characteristic of the ele-
ment and the relationship with proton and neutron of
nucleon is given by Equation 3.1. Where Z , A and N
is Mass Number, Atomic Number (Proton Number) and
Neutron Number respectively.

AZ XN (3.1)

Mass Number A is the total number of proton and neu-
tron as expressed in Equation 3.2. Neutron and proton
is contains in the nucleon of the nucleus.

A=Z+N (3.2)

Neutron activation process involved the collisions
of incoming neutron with the nucleus where in it there
are neutron contained in the nucleon. In general, changes

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