Keyword Definition

Two uranium isotopes (235U, 238U) and one thorium isotope (232Th) occur in nature and are unusual in two respects.  The first is that these isotopes are radioactive, decaying mainly by alpha emission via a whole chain of daughter products, the ultimate stable end products being 207Pb, 206Pb and 208Pb respectively.  The second unusual feature is that during neutron irradiation, they undergo nuclear fission, 235U predominantly in a thermal neutron flux and 238U, 232Th in a fast neutron flux.  These properties have led to neutron activation techniques specific to uranium and thorium. (Potts, 1987, p440)

Hierarchical classification

Technique >> Radiochemical methods >> Activation analysis >> Neutron activation >> Fission


Delayed Neutron Counting | Fission track

Category: Analytical techniques

The different kinds of analytical techniques have been classified hierarchically. Examples: “AAS”, “FA-NA”. Taken from the “Analytical_Techniques_SHARED” database table.

Associated Analytical Suites:


Associated Analytical Packages:


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