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Chapter 7
Applications of Tagged
Neutron Beams
7.1 USE OF TAGGED NEUTRON BEAMS
e physics of tagged neutron beam applications to sample characterization
and identication is shown in Figure 7.1. e E
n
= 14 MeV neutrons (mass–m
n
)
are produced by a small neutron generator inside which an alpha particle detec-
tor is mounted. By the detection of associated alpha particles, an electronically
collimated neutron beam is produced, which upon the bombardment of the
investigated voxel produces gamma rays characteristic of the material pres-
ent within the voxel. e measurement of time-of-ight spectrum, ΔT, (alpha
particle: start, gamma ray: stop) det ...