SDG: TXRF a Flashcards
1
Q
Overview
A
2
Q
Electromagnetic Radiation
A
3
Q
Nature of X-Rays
A
4
Q
X-Ray tube
A
5
Q
The X-ray spectrum: Continuous or Brehmstrahlung and line spectrum
A
6
Q
Brehmstrahlung
A
7
Q
Nature of X-rays
A
8
Q
X-ray line spectrum production Competing events
A
9
Q
K & L Spectral Lines
A
10
Q
X-Ray Fluorescence
A
11
Q
The line spectrum
Measure for E position
A
12
Q
The line spectrum
Z values
A
13
Q
The line spectrum
range
A
14
Q
The line spectrum Fluorescence and Auger electron yield
A
15
Q
Attenuation of X-rays
Cause of attenuation
A
16
Q
Attenuation of X-rays
consequence
A
17
Q
Photoelectric absorption
A
18
Q
Excitation: X-Ray Absorption
A
19
Q
X-ray scatter
A
20
Q
Total attenuation
A
21
Q
XRF vs TXRF
A
22
Q
What is X-ray fluorescence?
A
23
Q
X-Ray spectrum
A
24
Q
XRF versus TXRF
excitation
A
25
Deflection of X-rays
26
Refractive index
27
Principle of Total Reflection
28
Total External Reflection
29
Reflectivity
30
Reflectivity
around alpha
31
Penetration depth
total reflection
32
Penetration depth
below alpha crit
33
Reflectivity and penetration depth
34
XRF versus TXRF regime
35
Interference of X-rays
36
Standing wave fields within a thin layer
37
Standing wave fields
38
Standing wave field in front of a thick substrate
39
XRF versus TXRF
40
Angle scan: bulk type
41
Angle scan: Residues on substrate
42
Angle scan: Film types in substrate
43
TXRF - summary
44
Angle scan: Calibration model
45
Calibration model TXRF Unified measurement angle
46
TXRF - instrumentation
47
X-ray fluorescence spectroscopy
48
X-ray Sources
49
End Window X-Ray Tube
50
Side Window X-Ray Tube
51
Rotating anode
52
Other Sources
53
X-ray tube selection for recording spectra
X-ray tube selection for recording spectra
54
Excitation efficiency
55
Excitation range: WLbeta excitation
56
Excitation range: MoKalpha excitation
57
Monochromator also used for TXRF
58
X-ray fluorescence spectroscopy
59
The different set-ups
60
Wavelength Dispersive XRF
61
Diffraction
62
Multilayers
63
Some wavelength dispersive set-ups
64
Energy dispersive configuration
65
The detector system
66
Detector Principles
67
Gas ionization detectors
68
Gas ionization Proportional Counter
69
Scintillation detectors
70
Scintillation Detector
scheme
71
Solid State Detector
72
Semiconductor detectors
73
Metals, insulators, semiconductors
74
Intrinsic semiconductors
75
Extrinsic semiconductors: n-type
76
Extrinsic semiconductors: p-type
77
An overview of semiconductor conductivity
78
intermezzo
79
Semiconductor detectors
Li drifted silicon detector
80
Semiconductor detectors
when ionizing radiation
81
Semiconductor detectors
82
Semiconductor detectors
amplifying
83
Energy Dispersive Electronics
84
Multi-Channel Analyser
85
Performance characteristics
Detector efficiency
86
Performance characteristics ◼Spectral resolution
87
Performance characteristics ◼ Input – Output yield
88
Performance characteristics ◼ Escape peak phenomenon
