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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
429
Chapter 9
Medical Applications of
14 MeV Neutrons
9.1 INTRODUCTION
Attenuation of neutron beam, as shown in Figure 9.1, by the specimen depends
on thickness and the attenuation coecient similar to gamma ray as follows:
I
t
= I
0
exp (−Σt)
where
I
t
is the transmitted neutron intensity (n/cm
2
/s)
I
0
is the incident neutron intensity (n/cm
2
/s)
t is the specimen thickness (cm)
Σ is the macroscopic cross section (cm
−1
)
Σ is equivalent to the linear attenuation coecient of gamma ray (μ) and is the
characteristic of elements in the specimen. Σ and μ are the products of atom
density of elements contained in the specimen (in atoms/cm
3
) and their eec-
tive micro ...
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Publisher Resources

ISBN: 9781482238013