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Instrumental Analytical Chemistry > SDG: TXRF a > Flashcards

SDG: TXRF a Flashcards

1
Q

Overview

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2
Q

Electromagnetic Radiation

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3
Q

Nature of X-Rays

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4
Q

X-Ray tube

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5
Q

The X-ray spectrum: Continuous or Brehmstrahlung and line spectrum

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6
Q

Brehmstrahlung

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7
Q

Nature of X-rays

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8
Q

X-ray line spectrum production Competing events

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9
Q

K & L Spectral Lines

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10
Q

X-Ray Fluorescence

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11
Q

The line spectrum

Measure for E position

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12
Q

The line spectrum

Z values

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13
Q

The line spectrum

range

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14
Q

The line spectrum Fluorescence and Auger electron yield

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15
Q

Attenuation of X-rays

Cause of attenuation

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16
Q

Attenuation of X-rays

consequence

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17
Q

Photoelectric absorption

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18
Q

Excitation: X-Ray Absorption

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19
Q

X-ray scatter

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20
Q

Total attenuation

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21
Q

XRF vs TXRF

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22
Q

What is X-ray fluorescence?

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23
Q

X-Ray spectrum

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24
Q

XRF versus TXRF

excitation

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25
Q

Deflection of X-rays

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26
Q

Refractive index

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27
Q

Principle of Total Reflection

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28
Q

Total External Reflection

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29
Q

Reflectivity

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30
Q

Reflectivity

around alpha

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31
Q

Penetration depth

total reflection

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32
Q

Penetration depth

below alpha crit

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33
Q

Reflectivity and penetration depth

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34
Q

XRF versus TXRF regime

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35
Q

Interference of X-rays

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36
Q

Standing wave fields within a thin layer

37
Q

Standing wave fields

38
Q

Standing wave field in front of a thick substrate

39
Q

XRF versus TXRF

40
Q

Angle scan: bulk type

41
Q

Angle scan: Residues on substrate

42
Q

Angle scan: Film types in substrate

43
Q

TXRF - summary

44
Q

Angle scan: Calibration model

45
Q

Calibration model TXRF Unified measurement angle

46
Q

TXRF - instrumentation

47
Q

X-ray fluorescence spectroscopy

48
Q

X-ray Sources

49
Q

End Window X-Ray Tube

50
Q

Side Window X-Ray Tube

51
Q

Rotating anode

52
Q

Other Sources

53
Q

X-ray tube selection for recording spectra

A

X-ray tube selection for recording spectra

54
Q

Excitation efficiency

55
Q

Excitation range: WLbeta excitation

56
Q

Excitation range: MoKalpha excitation

57
Q

Monochromator also used for TXRF

58
Q

X-ray fluorescence spectroscopy

59
Q

The different set-ups

60
Q

Wavelength Dispersive XRF

61
Q

Diffraction

62
Q

Multilayers

63
Q

Some wavelength dispersive set-ups

64
Q

Energy dispersive configuration

65
Q

The detector system

66
Q

Detector Principles

67
Q

Gas ionization detectors

68
Q

Gas ionization Proportional Counter

69
Q

Scintillation detectors

70
Q

Scintillation Detector

scheme

71
Q

Solid State Detector

72
Q

Semiconductor detectors

73
Q

Metals, insulators, semiconductors

74
Q

Intrinsic semiconductors

75
Q

Extrinsic semiconductors: n-type

76
Q

Extrinsic semiconductors: p-type

77
Q

An overview of semiconductor conductivity

78
Q

intermezzo

79
Q

Semiconductor detectors

Li drifted silicon detector

80
Q

Semiconductor detectors

when ionizing radiation

81
Q

Semiconductor detectors

82
Q

Semiconductor detectors

amplifying

83
Q

Energy Dispersive Electronics

84
Q

Multi-Channel Analyser

85
Q

Performance characteristics

Detector efficiency

86
Q

Performance characteristics ◼Spectral resolution

87
Q

Performance characteristics ◼ Input – Output yield

88
Q

Performance characteristics ◼ Escape peak phenomenon

Instrumental Analytical Chemistry (16 decks)

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