The intensity of characteristic X-rays as a function of the anode current and anode voltage

Principle

The polychromatic X-radiation from a copper anode is analyzed using a LiF monocrystal according to Bragg. Varying the anode current and anode voltage influences the intensity of the characteristic K_a and K_b radiation.

Tasks

1. Record the intensity spectrum of polychromatic radiation from a X-ray tube with the help of a LiF monocrystal.
2. Determine the intensities of the characteristic K_a and K_b radiations as a function of both, the anode current and the anode voltage, and plot them graphically.
3. Compare the results of the measurement with the theoretical intensity formula.

Learning objectives

• Characteristic X-ray radiation
• Energy level
• Bragg equation
• Intensity of characteristic X-rays