FISCHER FISCHERSCOPE X-RAY XDLM 231, Operator'S Manual

Page: 17 / 236

FISCHERSCOPE ® X-RAY 15
Instrument Overview
2.4 Functional Principle of the Instrument
The following figure shows the principle structure of the instrument:
Figure 2.2: Functional principle of the instrument
Functional principle
1. The x-ray tube generates the primary x-radiation (primary radiation). The electrically heated
cathode emits electrons. Accelerated by the applied high voltage to very high speeds, the elec-
trons bombard the anode material. This generates the primary x-radiation.
2. The primary filter optimizes the energy distribution of the primary x-radiation.
3. The shutter serves as a safety device. It is opened during a measurement only. In case of a
malfunction or when opening the measurement chamber, it will be closed automatically. This
ensures, that the user is never exposed to x-radiation.
X-ray tube Cathode
Anode
Primary x-radiation
Aperture (Collimator)
Coating layer
Base material
Detector
Shutter
Mirror
Optics
Video camera
Spectrum
WinFTM
main window
X-ray fluorescence radiation
Primary filter