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14 MeV Neutrons
book

14 MeV Neutrons

by Vladivoj Valkovic
August 2015
Intermediate to advanced content levelIntermediate to advanced
516 pages
16h 29m
English
CRC Press
Content preview from 14 MeV Neutrons
6.4 Threat Material Detection with PFNA
219
plastic bombs, it is C
6
N
6
O
6
H
6
. Fermi argued that the presence of nitrogen is the
“explosive signature” and should be detected via 10.8 MeV γ’s emitted by ther-
mal neutron capture in
14
N. Westinghouse researchers followed his idea by a
development program that was abandoned 10years and $100 million later with
the admission: “We developed a nitrogen detector, not an explosive detector.”
One cubic meter of air contains nearly a kilogram of N
2
. Qualitatively detecting
the mere presence of one or more elements of the explosive does not make an
explosive detector.
Since there are no excited states of H, the ...
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Publisher Resources

ISBN: 9781482238013