K and L absorption edges of X-rays / Moseley’s law and the Rydberg constant
Samples of various elements of different atomic numbers are irradiated with X-rays of a known spectral distribution. The energy of the transmitted intensities is analyzed using a monocrystal analyzer. Subsequently, the Rydberg constant and the screening constants are calculated from the energy of the absorption edges.
Geiger-Mueller counter tube, type B, BNC cable 50 cm
XR 4.0 X-ray LiF crystal, mounted
XR 4.0 X-ray Diaphragm tube d = 2 mm
XR 4.0 X-ray Diaphragm tube d = 5 mm
XR 4.0 X-ray goniometer
XR 4.0 expert unit, X-ray unit, 35 kV
XR 4.0 Software measure X-ray
Data cable USB, plug type A/B, 1.8 m
Mortar w. pestle, 70ml, porcelain
Microspoon, steel
XR 4.0 X-ray Plug-in Cu tube
- Record the intensity of the X-rays emitted from the copper anode as a function of the Bragg angle using a LiF monocrystal as analyzer. Determine the K absorption edges of different absorber materials.
- Calculate the Rydberg constant and the screening constants from the energy values of the K absorption edges.
- Find the L absorption edges of different absorber materials.
- Calculate the Rydberg constant from the energy values of the L absorption edges.
- X-ray Bremsstrahlung
- Characteristic radiation
- Bragg equation
- Bohr’s atomic model
- Atomic energy level scheme
- Moseley’s law
- Rydberg constant
- Screening constant