Scanning Electron Microscopy and X-Ray Microanalysis

62

4

1.0

0.8

0.6

0.4

0.2

0.0

0510

Photon energy (keV)

a Absorption parameter f(c) for gold, E 0 = 20 keV

15 20

f(c

)

0510

Photon energy (keV)

Gold, E 0 = 20 keV

1e+8

b

1e+7

1e+6

1e+5

1e+4

1e+3

1e+2

1e+0

1e+1

X-

ray intensit

y

15 20

Emitted

Generated

012

Photon energy (keV)

Gold, E 0 = 20 keV

1e+8

c

1e+7

1e+6

1e+5

1e+4

1e+3

1e+2

X-

ray intensi

ty

345

Emitted

Generated

Emitted

Generated

. Fig. 4.24 a Absorption parameter f(χ) as a function of
photon energy for gold and an incident beam energy of
E 0 = 20 keV. Note the abrupt decrease in f(χ) for photons
just above the ionization energies of the gold M-shell and
gold L-shell. b Comparison of the generated (red) and
emitted (blue) X-ray spectra for gold with an incident beam
energy of E 0 = 20 keV. c Comparison of the generated (red)
and emitted (blue) X-ray spectra for gold with an incident
beam energy of E 0 = 20 keV; expansion of the region around
the gold M-shell ionization edges

Chapter 4 · X-Rays