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The resulting X-Ray spectrum
Unfilteredradiation(in vacuum)
INTENSITY
Characteristic X-rays
Bremsstrahlung spectrum
Unfiltered in vacuum
•
Photons with E ranging from 0 to
the kinetic E of the incident e
-
may
be produced
->
continuous spectrum
electrons
Angular distribution
20
40 60 80 100 120
PHOTONENERGY(keV)
Spectrum after
filtration
Maximum electron energy
X-ray tube peak voltage
•
The spectrum produced depends
on the kinetic E of the incident e
-
as
well as on the thickness and atomic
number
Z
of the target.
target
design
X-rays
Low – medium E
(10-400keV)
High E>1MeV