60
4
. Fig. 4.22 a Absorption parameter f(χ) as a function of
photon energy for carbon and an incident beam energy
of E 0 = 20 keV. Note the abrupt decrease for photons
just above the ionization energy of carbon at 0.284 keV.
b Expansion of the region from 0 to 5 keV. Note the abrupt
decrease for photons just above the ionization energy
of carbon at 0.284 keV. c Comparison of the generated
(black) and emitted (red) X-ray spectra for carbon with an
incident beam energy of E 0 = 20 keV
1.0
a
0.8
0.6
0.4
0.2
0.0
510
Photon energy (keV)
15 20
Absorption parameter f(χ) for C, E 0 = 20 keV
f(χ
)
Absorption parameter f(χ) for C, E 0 = 20 keV
1.0
0.8
0.6
0.4
0.2
0.0
f(χ
)
0 1
0
23
Photon energy (keV)
45
b
1e+8
c Generated and emitted X-ray spectra for carbon
1e+7 E 0 = 20 keV
1e+6
1e+5
1e+4
1e+3
Intensit
y
1e+2
1e+1
1e+0
0510
X-ray photon energy (keV)
15 20
Generated
Emitted
Chapter 4 · X-Rays